Imperial College London

Morgan O. Wascko

Faculty of Natural SciencesDepartment of Physics

Professor of Physics
 
 
 
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Contact

 

+44 (0)20 7594 3465m.wascko Website CV

 
 
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Assistant

 

Ms Paula Brown +44 (0)20 7594 7823

 
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Location

 

522Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

141 results found

Abe K, Akhlaq N, Akutsu R, Ali A, Alt C, Andreopoulos C, Antonova M, Aoki S, Arihara T, Asada Y, Ashida Y, Atkin ET, Awataguchi Y, Barker GJ, Barr G, Barrow D, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berns L, Bhadra S, Blanchet A, Blondel A, Bolognesi S, Bonus T, Bourguille B, Boyd SB, Bravar A, Bravo Berguño D, Bronner C, Bron S, Bubak A, Buizza Avanzini M, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chakrani J, Cherdack D, Christodoulou G, Cicerchia M, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, De Rosa G, Dealtry T, Delogu CC, Dennis SR, Densham C, Dergacheva A, Di Lodovico F, Dolan S, Douqa D, Doyle TA, Dumarchez J, Dunne P, Eguchi A, Eklund L, Emery-Schrenk S, Ereditato A, Finch AJ, Fiorillo G, Francois C, Friend M, Fujii Y, Fukuda R, Fukuda Y, Fusshoeller K, Giganti C, Gonin M, Goodman EAG, Gorin A, Grassi M, Guigue M, Hadley DR, Hamacher-Baumann P, Harris DA, Hartz M, Hasegawa T, Hassani S, Hastings NC, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Hong Van NT, Honjo T, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishitsuka M, Iwamoto K, Izmaylov A, Izumi N, Jakkapu M, Jamieson B, Jenkins SJ, Jesús-Valls C, Jiang JJ, Jonsson P, Jung CK, Jurj PB, Kabirnezhad M, Kakuno H, Kameda J, Kasetti SP, Kataoka Y, Katayama Y, Katori T, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, Kikutani H, King S, Kisiel J, Kobata T, Kobayashi T, Koch L, Konaka A, Kormos LL, Koshio Y, Kostin A, Kowalik K, Kudenko Y, Kuribayashi S, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Last D, Laveder M, Lawe M, Lin S-K, Litchfield RP, Liu SL, Longhin A, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Marti-Magro L, Maruyama T, Matsubara T, Matsushita K, Mauger C, Maurel A, Mavrokoridis K, Mazzucato E, McCauley N, McElwee J, McFarland KS, McGrew C, Mefodiev A, Megias GD, Mellet L, Mezzetto M, Minamino A, Mineev O, Mine S, Miura M, Molina Bueno L, Moriyama S, Mueller TA, Munford D, Munteanu L, Nagai Y, Nakadet al., 2021, First T2K measurement of transverse kinematic imbalance in the muon-neutrino charged-current single-π+ production channel containing at least one proton, Physical Review D, Vol: 103, Pages: 1-27, ISSN: 2470-0010

This paper reports the first T2K measurement of the transverse kinematic imbalance in the single-π+ production channel of neutrino interactions. We measure the differential cross sections in the muon-neutrino charged-current interaction on hydrocarbon with a single π+ and at least one proton in the final state, at the ND280 off axis near detector of the T2K experiment. The extracted cross sections are compared to the predictions from different neutrino-nucleus interaction event generators. Overall, the results show a preference for models that have a more realistic treatment of nuclear medium effects including the initial nuclear state and final-state interactions.

Journal article

Abe K, Akhlaq N, Akutsu R, Ali A, Alt C, Andreopoulos C, Antonova M, Aoki S, Arihara T, Asada Y, Ashida Y, Atkin ET, Awataguchi Y, Barker GJ, Barr G, Barrow D, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berns L, Bhadra S, Blanchet A, Blondel A, Bolognesi S, Bonus T, Bourguille B, Boyd SB, Bravar A, Bravo Berguño D, Bronner C, Bron S, Bubak A, Buizza Avanzini M, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chakrani J, Cherdack D, Christodoulou G, Cicerchia M, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, De Rosa G, Dealtry T, Delogu CC, Dennis SR, Densham C, Dergacheva A, Di Lodovico F, Dolan S, Douqa D, Doyle TA, Dumarchez J, Dunne P, Eguchi A, Eklund L, Emery-Schrenk S, Ereditato A, Finch AJ, Fiorillo G, Francois C, Friend M, Fujii Y, Fukuda R, Fukuda Y, Fusshoeller K, Giganti C, Gonin M, Goodman EAG, Gorin A, Grassi M, Guigue M, Hadley DR, Hamacher-Baumann P, Harris DA, Hartz M, Hasegawa T, Hassani S, Hastings NC, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Hong Van NT, Honjo T, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishitsuka M, Iwamoto K, Izmaylov A, Izumi N, Jakkapu M, Jamieson B, Jenkins SJ, Jesús-Valls C, Jiang JJ, Jonsson P, Jung CK, Jurj PB, Kabirnezhad M, Kakuno H, Kameda J, Kasetti SP, Kataoka Y, Katayama Y, Katori T, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, Kikutani H, King S, Kisiel J, Kobata T, Kobayashi T, Koch L, Konaka A, Kormos LL, Koshio Y, Kostin A, Kowalik K, Kudenko Y, Kuribayashi S, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Last D, Laveder M, Lawe M, Lin S-K, Litchfield RP, Liu SL, Longhin A, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Marti-Magro L, Maruyama T, Matsubara T, Matsushita K, Mauger C, Maurel A, Mavrokoridis K, Mazzucato E, McCauley N, McElwee J, McFarland KS, McGrew C, Mefodiev A, Megias GD, Mellet L, Mezzetto M, Minamino A, Mineev O, Mine S, Miura M, Molina Bueno L, Moriyama S, Mueller TA, Munford D, Munteanu L, Nagai Y, Nakadet al., 2021, Improved constraints on neutrino mixing from the T2K experiment with 3.13×1021 protons on target, Physical Review D, Vol: 103, Pages: 1-59, ISSN: 2470-0010

The T2K experiment reports updated measurements of neutrino and antineutrino oscillations using both appearance and disappearance channels. This result comes from an exposure of 14.9(16.4)×1020 protons on target in neutrino (antineutrino) mode. Significant improvements have been made to the neutrino interaction model and far detector reconstruction. An extensive set of simulated data studies have also been performed to quantify the effect interaction model uncertainties have on the T2K oscillation parameter sensitivity. T2K performs multiple oscillation analyses that present both frequentist and Bayesian intervals for the Pontecorvo-Maki-Nakagawa-Sakata parameters. For fits including a constraint on sin2θ13 from reactor data and assuming normal mass ordering T2K measures sin2θ23=0.53+0.03−0.04 and Δm232=(2.45±0.07)×10−3  eV2 c−4. The Bayesian analyses show a weak preference for normal mass ordering (89% posterior probability) and the upper sin2θ23 octant (80% posterior probability), with a uniform prior probability assumed in both cases. The T2K data exclude CP conservation in neutrino oscillations at the 2σ level.

Journal article

Deisting A, Waldron A, Atkin E, Barker G, Basharina-Freshville A, Betancourt C, Boyd S, Brailsford D, Chen-Wishart Z, Cremonesi L, Dias A, Dunne P, Haigh J, Hamacher-Baumann P, Jones S, Kaboth A, Korzenev A, Ma W, Mermod P, Mironova M, Monroe J, Nichol R, Nonnenmacher T, Nowak J, Parker W, Ritchie-Yates H, Roth S, Saakyan R, Serra N, Shitov Y, Steinmann J, Tarrant A, Uchida M, Valder S, Ward M, Wascko Met al., 2021, Commissioning of a high pressure time projection chamber with optical readout, Instruments, Vol: 5, ISSN: 2410-390X

The measurements of proton–nucleus scattering and high resolution neutrino–nucleus interaction imaging are key in reducing neutrino oscillation systematic uncertainties in future experiments. A High Pressure Time Projection Chamber (HPTPC) prototype has been constructed and operated at the Royal Holloway University of London and CERN as a first step in the development of a HPTPC that is capable of performing these measurements as part of a future long-baseline neutrino oscillation experiment, such as the Deep Underground Neutrino Experiment. In this paper, we describe the design and operation of the prototype HPTPC with an argon based gas mixture. We report on the successful hybrid charge and optical readout using four CCD cameras of signals from 241Am sources.

Journal article

Abi B, Acciarri R, Acero MA, Adamov G, Adams D, Adinolfi M, Ahmad Z, Ahmed J, Alion T, Monsalve SA, Alt C, Anderson J, Andreopoulos C, Andrews MP, Andrianala F, Andringa S, Ankowski A, Antonova M, Antusch S, Aranda-Fernandez A, Ariga A, Arnold LO, Arroyave MA, Asaadi J, Aurisano A, Aushev V, Autiero D, Azfar F, Back H, Back JJ, Backhouse C, Baesso P, Bagby L, Bajou R, Balasubramanian S, Baldi P, Bambah B, Barao F, Barenboim G, Barker GJ, Barkhouse W, Barnes C, Barr G, Barranco Monarca J, Barros N, Barrow JL, Bashyal A, Basque V, Bay F, Bazo Alba JL, Beacom JF, Bechetoille E, Behera B, Bellantoni L, Bellettini G, Bellini V, Beltramello O, Belver D, Benekos N, Neves FB, Berger J, Berkman S, Bernardini P, Berner RM, Berns H, Bertolucci S, Betancourt M, Bezawada Y, Bhattacharjee M, Bhuyan B, Biagi S, Bian J, Biassoni M, Biery K, Bilki B, Bishai M, Bitadze A, Blake A, Siffert BB, Blaszczyk FDM, Blazey GC, Blucher E, Boissevain J, Bolognesi S, Bolton T, Bonesini M, Bongrand M, Bonini F, Booth A, Booth C, Bordoni S, Borkum A, Boschi T, Bostan N, Bour P, Boyd SB, Boyden D, Bracinik J, Braga D, Brailsford D, Brandt A, Bremer J, Brew C, Brianne E, Brice SJ, Brizzolari C, Bromberg C, Brooijmans G, Brooke J, Bross A, Brunetti G, Buchanan N, Budd H, Caiulo D, Calafiura P, Calcutt J, Calin M, Calvez S, Calvo E, Camilleri L, Caminata A, Campanelli M, Caratelli D, Carini G, Carlus B, Carniti P, Terrazas IC, Carranza H, Castillo A, Castromonte C, Cattadori C, Cavalier F, Cavanna F, Centro S, Cerati G, Cervelli A, Cervera Villanueva A, Chalifour M, Chang C, Chardonnet E, Chatterjee A, Chattopadhyay S, Chaves J, Chen H, Chen M, Chen Y, Cherdack D, Chi C, Childress S, Chiriacescu A, Cho K, Choubey S, Christensen A, Christian D, Christodoulou G, Church E, Clarke P, Coan TE, Cocco AG, Coelho JAB, Conley E, Conrad JM, Convery M, Corwin L, Cotte P, Cremaldi L, Cremonesi L, Crespo-Anadon J, Cristaldo E, Cross R, Cuesta C, Cui Y, Cussans D, Dabrowski M, da Motta H, Peres LDS, David C, Davidet al., 2021, Supernova neutrino burst detection with the Deep Underground Neutrino Experiment, European Physical Journal C: Particles and Fields, Vol: 81, Pages: 1-26, ISSN: 1124-1861

The Deep Underground Neutrino Experiment (DUNE), a 40-kton underground liquid argon time projection chamber experiment, will be sensitive to the electron-neutrino flavor component of the burst of neutrinos expected from the next Galactic core-collapse supernova. Such an observation will bring unique insight into the astrophysics of core collapse as well as into the properties of neutrinos. The general capabilities of DUNE for neutrino detection in the relevant few- to few-tens-of-MeV neutrino energy range will be described. As an example, DUNE’s ability to constrain the νe spectral parameters of the neutrino burst will be considered.

Journal article

Abi B, Acciarri R, Acero MA, Adamov G, Adams D, Adinolfi M, Ahmad Z, Ahmed J, Alion T, Monsalve SA, Alt C, Anderson J, Andreopoulos C, Andrews MP, Andrianala F, Andringa S, Ankowski A, Antonova M, Antusch S, Aranda-Fernandez A, Ariga A, Arnold LO, Arroyave MA, Asaadi J, Aurisano A, Aushev V, Autiero D, Azfar F, Back H, Back JJ, Backhouse C, Baesso P, Bagby L, Bajou R, Balasubramanian S, Baldi P, Bambah B, Barao F, Barenboim G, Barker GJ, Barkhouse W, Barnes C, Barr G, Monarca JB, Barros N, Barrow JL, Bashyal A, Basque V, Bay F, Alba JLB, Beacom JF, Bechetoille E, Behera B, Bellantoni L, Bellettini G, Bellini V, Beltramello O, Belver D, Benekos N, Neves FB, Berger J, Berkman S, Bernardini P, Berner RM, Berns H, Bertolucci S, Betancourt M, Bezawada Y, Bhattacharjee M, Bhuyan B, Biagi S, Bian J, Biassoni M, Biery K, Bilki B, Bishai M, Bitadze A, Blake A, Siffert BB, Blaszczyk FDM, Blazey GC, Blucher E, Boissevain J, Bolognesi S, Bolton T, Bonesini M, Bongrand M, Bonini F, Booth A, Booth C, Bordoni S, Borkum A, Boschi T, Bostan N, Bour P, Boyd SB, Boyden D, Bracinik J, Braga D, Brailsford D, Brandt A, Bremer J, Brew C, Brianne E, Brice SJ, Brizzolari C, Bromberg C, Brooijmans G, Brooke J, Bross A, Brunetti G, Buchanan N, Budd H, Caiulo D, Calafiura P, Calcutt J, Calin M, Calvez S, Calvo E, Camilleri L, Caminata A, Campanelli M, Caratelli D, Carini G, Carlus B, Carniti P, Terrazas IC, Carranza H, Castillo A, Castromonte C, Cattadori C, Cavalier F, Cavanna F, Centro S, Cerati G, Cervelli A, Villanueva AC, Chalifour M, Chang C, Chardonnet E, Chatterjee A, Chattopadhyay S, Chaves J, Chen H, Chen M, Chen Y, Cherdack D, Chi C, Childress S, Chiriacescu A, Cho K, Choubey S, Christensen A, Christian D, Christodoulou G, Church E, Clarke P, Coan TE, Cocco AG, Coelho JAB, Conley E, Conrad JM, Convery M, Corwin L, Cotte P, Cremaldi L, Cremonesi L, Crespo-Anadon JI, Cristaldo E, Cross R, Cuesta C, Cui Y, Cussans D, Dabrowski M, da Motta H, Peres LDS, David C, David Q, Davies GS, Daviet al., 2021, Prospects for beyond the standard model physics searches at the deep underground neutrino experiment DUNE collaboration, European Physical Journal C: Particles and Fields, Vol: 81, Pages: 1-51, ISSN: 1124-1861

The Deep Underground Neutrino Experiment (DUNE) will be a powerful tool for a variety of physics topics. The high-intensity proton beams provide a large neutrino flux, sampled by a near detector system consisting of a combination of capable precision detectors, and by the massive far detector system located deep underground. This configuration sets up DUNE as a machine for discovery, as it enables opportunities not only to perform precision neutrino measurements that may uncover deviations from the present three-flavor mixing paradigm, but also to discover new particles and unveil new interactions and symmetries beyond those predicted in the Standard Model (SM). Of the many potential beyond the Standard Model (BSM) topics DUNE will probe, this paper presents a selection of studies quantifying DUNE’s sensitivities to sterile neutrino mixing, heavy neutral leptons, non-standard interactions, CPT symmetry violation, Lorentz invariance violation, neutrino trident production, dark matter from both beam induced and cosmogenic sources, baryon number violation, and other new physics topics that complement those at high-energy colliders and significantly extend the present reach.

Journal article

Abe K, Akhlaq N, Akutsu R, Ali A, Alt C, Andreopoulos C, Antonova M, Aoki S, Arihara T, Asada Y, Ashida Y, Atkin ET, Awataguchi Y, Barker GJ, Barr G, Barrow D, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berns L, Bhadra S, Blondel A, Bolognesi S, Bonus T, Bourguille B, Boyd SB, Bravar A, Berguno DB, Bronner C, Bron S, Bubak A, Avanzini MB, Cao S, Cartwright SL, Catanesi MG, Cervera A, Cherdack D, Christodoulou G, Cicerchia M, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, De Rosa G, Dealtry T, Delogu CC, Dennis SR, Densham C, Dergacheva A, Di Lodovico F, Dolan S, Doyle TA, Dumarchez J, Dunne P, Eguchi A, Eklund L, Emery-Schrenk S, Ereditato A, Finch AJ, Fiorentini GA, Francois C, Friend M, Fujii Y, Fukuda R, Fukuda Y, Fusshoeller K, Giganti C, Gonin M, Gorin A, Guigue M, Hadley DR, Hamacher-Baumann P, Hartz M, Hasegawa T, Hassani S, Hastings NC, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Van NTH, Honjo T, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishitsuka M, Iwamoto K, Izmaylov A, Izumi N, Jakkapu M, Jamieson B, Jenkins SJ, Jesus-Valls C, Jonsson P, Jung CK, Jurj PB, Kabirnezhad M, Kakuno H, Kameda J, Kasetti SP, Kataoka Y, Katayama Y, Katori T, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, Kikutani H, King S, Kisiel J, Kobata T, Kobayashi T, Koch L, Konaka A, Kormos LL, Koshio Y, Kostin A, Kowalik K, Kudenko Y, Kuribayashi S, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Last D, Laveder M, Lawe M, Litchfield RP, Liu SL, Longhin A, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Marti-Magro L, Maruyama T, Matsubara T, Matsushita K, Mauger C, Mavrokoridis K, Mazzucato E, McCauley N, McElwee J, McFarland KS, McGrew C, Mefodiev A, Mezzetto M, Minamino A, Mineev O, Mine S, Miura M, Bueno LM, Moriyama S, Mueller TA, Munteanu L, Nagai Y, Nakadaira T, Nakahata M, Nakajima Y, Nakamura A, Nakamura K, Nakano Y, Nakayama S, Nakaya T, Nakayoshi K, Naseby CER, Ngoc T, Nguyen VQ, Niewczas K, Niet al., 2021, T2K measurements of muon neutrino and antineutrino disappearance using 3.13 x 10(21) protons on target, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 103, Pages: 1-9, ISSN: 1550-2368

We report measurements by the T2K experiment of the parameters θ23 and Δm232, which govern the disappearance of muon neutrinos and antineutrinos in the three-flavor PMNS neutrino oscillation model at T2K’s neutrino energy and propagation distance. Utilizing the ability of the experiment to run with either a mainly neutrino or a mainly antineutrino beam, muon-like events from each beam mode are used to measure these parameters separately for neutrino and antineutrino oscillations. Data taken from 1.49×1021 protons on target (POT) in neutrino mode and 1.64×1021 POT in antineutrino mode are used. The best-fit values obtained by T2K were sin2(θ23)=0.51+0.06−0.07(0.43+0.21−0.05) and Δm232=2.47+0.08−0.09(2.50+0.18−0.13)×10−3  eV2/c4 for neutrinos (antineutrinos). No significant differences between the values of the parameters describing the disappearance of muon neutrinos and antineutrinos were observed. An analysis using an effective two-flavor neutrino oscillation model where the sine of the mixing angle is allowed to take nonphysical values larger than 1 is also performed to check the consistency of our data with the three-flavor model. Our data were found to be consistent with a physical value for the mixing angle.

Journal article

Abi B, Abud AA, Acciarri R, Acero MA, Adamov G, Adamowski M, Adams D, Adrien P, Adinolfi M, Ahmad Z, Ahmed J, Alion T, Monsalve SA, Alt C, Anderson J, Andreopoulos C, Andrews MP, Andrianala F, Andringa S, Ankowski A, Antonova M, Antusch S, Aranda-Fernandez A, Ariga A, Arnold LO, Arroyave MA, Asaadi J, Aurisano A, Aushev V, Autiero D, Azfar F, Back H, Back JJ, Backhouse C, Baesso P, Bagby L, Bajou R, Balasubramanian S, Baldi P, Bambah B, Barao F, Barenboim G, Barker GJ, Barkhouse W, Barnes C, Barr G, Monarca JB, Barros N, Barrow JL, Bashyal A, Basque V, Bay F, Alba JLB, Beacom JF, Bechetoille E, Behera B, Bellantoni L, Bellettini G, Bellini V, Beltramello O, Belver D, Benekos N, Neves FB, Berger J, Berkman S, Bernardini P, Berner RM, Berns H, Bertolucci S, Betancourt M, Bezawada Y, Bhattacharjee M, Bhuyan B, Biagi S, Bian J, Biassoni M, Biery K, Bilki B, Bishai M, Bitadze A, Blake A, Siffert BB, Blaszczyk FDM, Blazey GC, Blucher E, Boissevain J, Bolognesi S, Bolton T, Bonesini M, Bongrand M, Bonini F, Booth A, Booth C, Bordoni S, Borkum A, Boschi T, Bostan N, Bour P, Boyd SB, Boyden D, Bracinik J, Braga D, Brailsford D, Brandt A, Bremer J, Brew C, Brianne E, Brice SJ, Brizzolari C, Bromberg C, Brooijmans G, Brooke J, Bross A, Brunetti G, Buchanan N, Budd H, Caiulo D, Calafiura P, Calcutt J, Calin M, Calvez S, Calvo E, Camilleri L, Caminata A, Campanelli M, Caratelli D, Carini G, Carlus B, Carniti P, Terrazas IC, Carranza H, Castillo A, Castromonte C, Cattadori C, Cavalier F, Cavanna F, Centro S, Cerati G, Cervelli A, Villanueva AC, Chalifour M, Chang C, Chardonnet E, Charitonidis N, Chatterjee A, Chattopadhyay S, Chatzidaki P, Chaves J, Chen H, Chen M, Chen Y, Cherdack D, Chi C, Childress S, Chiriacescu A, Cho K, Choubey S, Christensen A, Christian D, Christodoulou G, Church E, Clarke P, Coan TE, Cocco AG, Coelho JAB, Conley E, Conrad JM, Convery M, Corwin L, Cotte P, Cremaldi L, Cremonesi L, Crespo-Anadon J, Cristaldo E, Cross R, Cuesta C, Cui Y, Cussans D, Dabrowsket al., 2020, First results on ProtoDUNE-SP liquid argon time projection chamber performance from a beam test at the CERN Neutrino Platform, Journal of Instrumentation, Vol: 15, Pages: 1-100, ISSN: 1748-0221

The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber with an active volume of 7.2× 6.1× 7.0 m3. It is installed at the CERN Neutrino Platform in a specially-constructed beam that delivers charged pions, kaons, protons, muons and electrons with momenta in the range 0.3 GeV/c to 7 GeV/c. Beam line instrumentation provides accurate momentum measurements and particle identification. The ProtoDUNE-SP detector is a prototype for the first far detector module of the Deep Underground Neutrino Experiment, and it incorporates full-size components as designed for that module. This paper describes the beam line, the time projection chamber, the photon detectors, the cosmic-ray tagger, the signal processing and particle reconstruction. It presents the first results on ProtoDUNE-SP's performance, including noise and gain measurements, dE/dx calibration for muons, protons, pions and electrons, drift electron lifetime measurements, and photon detector noise, signal sensitivity and time resolution measurements. The measured values meet or exceed the specifications for the DUNE far detector, in several cases by large margins. ProtoDUNE-SP's successful operation starting in 2018 and its production of large samples of high-quality data demonstrate the effectiveness of the single-phase far detector design.

Journal article

Abi B, Acciarri R, Acero MA, Adamov G, Adams D, Adinolfi M, Ahmad Z, Ahmed J, Alion T, Monsalve SA, Alt C, Anderson J, Andreopoulos C, Andrews MP, Andrianala F, Andringa S, Ankowski A, Antonova M, Antusch S, Aranda-Fernandez A, Ariga A, Arnold LO, Arroyave MA, Asaadi J, Aurisano A, Aushev V, Autiero D, Azfar F, Back H, Back JJ, Backhouse C, Baesso P, Bagby L, Bajou R, Balasubramanian S, Baldi P, Bambah B, Barao F, Barenboim G, Barker GJ, Barkhouse W, Barnes C, Barr G, Monarca JB, Barros N, Barrow JL, Bashyal A, Basque V, Bay F, Alba JLB, Beacom JF, Bechetoille E, Behera B, Bellantoni L, Bellettini G, Bellini V, Beltramello O, Belver D, Benekos N, Bento Neves F, Berger J, Berkman S, Bernardini P, Berner RM, Berns H, Bertolucci S, Betancourt M, Bezawada Y, Bhattacharjee M, Bhuyan B, Biagi S, Bian J, Biassoni M, Biery K, Bilki B, Bishai M, Bitadze A, Blake A, Blanco Siffert B, Blaszczyk FDM, Blazey GC, Blucher E, Boissevain J, Bolognesi S, Bolton T, Bonesini M, Bongrand M, Bonini F, Booth A, Booth C, Bordoni S, Borkum A, Boschi T, Bostan N, Bour P, Boyd SB, Boyden D, Bracinik J, Braga D, Brailsford D, Brandt A, Bremer J, Brew C, Brianne E, Brice SJ, Brizzolari C, Bromberg C, Brooijmans G, Brooke J, Bross A, Brunetti G, Buchanan N, Budd H, Caiulo D, Calafiura P, Calcutt J, Calin M, Calvez S, Calvo E, Camilleri L, Caminata A, Campanelli M, Caratelli D, Carini G, Carlus B, Carniti P, Terrazas IC, Carranza H, Castillo A, Castromonte C, Cattadori C, Cavalier F, Cavanna F, Centro S, Cerati G, Cervelli A, Cervera Villanueva A, Chalifour M, Chang C, Chardonnet E, Chatterjee A, Chattopadhyay S, Chaves J, Chen H, Chen M, Chen Y, Cherdack D, Chi C, Childress S, Chiriacescu A, Cho K, Choubey S, Christensen A, Christian D, Christodoulou G, Church E, Clarke P, Coan TE, Cocco AG, Coelho JAB, Conley E, Conrad JM, Convery M, Corwin L, Cotte P, Cremaldi L, Cremonesi L, Crespo-Anadon JI, Cristaldo E, Cross R, Cuesta C, Cui Y, Cussans D, Dabrowski M, da Motta H, Peres LDS, David C, Davidet al., 2020, Neutrino interaction classification with a convolutional neural network in the DUNE far detector, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 102, Pages: 092003 – 1-092003 – 20, ISSN: 1550-2368

The Deep Underground Neutrino Experiment is a next-generation neutrino oscillation experiment that aims to measure CP-violation in the neutrino sector as part of a wider physics program. A deep learning approach based on a convolutional neural network has been developed to provide highly efficient and pure selections of electron neutrino and muon neutrino charged-current interactions. The electron neutrino (antineutrino) selection efficiency peaks at 90% (94%) and exceeds 85% (90%) for reconstructed neutrino energies between 2–5 GeV. The muon neutrino (antineutrino) event selection is found to have a maximum efficiency of 96% (97%) and exceeds 90% (95%) efficiency for reconstructed neutrino energies above 2 GeV. When considering all electron neutrino and antineutrino interactions as signal, a selection purity of 90% is achieved. These event selections are critical to maximize the sensitivity of the experiment to CP-violating effects.

Journal article

Abe K, Bronner C, Haga Y, Hayato Y, Ikeda M, Imaizumi S, Ito H, Iyogi K, Kameda J, Kataoka Y, Kato Y, Kishimoto Y, Marti L, Miura M, Moriyama S, Mochizuki T, Nagao Y, Nakahata M, Nakajima Y, Nakajima T, Nakayama S, Okada T, Okamoto K, Orii A, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Takeda A, Takenaka A, Tanaka H, Tasaka S, Tomura T, Ueno K, Yano T, Yokozawa T, Akutsu R, Han S, Irvine T, Kajita T, Kametani I, Lee KP, McLachlan T, Okumura K, Richard E, Tashiro T, Wang R, Xia J, Bravo-Berguno D, Labarga L, Fernandez P, Blaszczyk FDM, Gustafson J, Kachulis C, Kearns E, Raaf JL, Stone JL, Sulak LR, Sussman S, Wan L, Wester T, Berkman S, Tobayama S, Bian J, Carminati G, Elnimr M, Griskevich NJ, Kropp WR, Locke S, Mine S, Renshaw A, Smy MB, Sobel HW, Takhistov V, Weatherly P, Hartfiel BL, Hill J, Keig WE, Hong N, Kim JY, Lim IT, Park RG, Akiri T, Bodur B, Himmel A, Li Z, O'Sullivan E, Scholberg K, Walter CW, Wongjirad T, Coffani A, Drapier O, El Hedri S, Giampaolo A, Gonin M, Imber J, Mueller TA, Paganini P, Quilain B, Ishizuka T, Nakamura T, Jang JS, Choi K, Learned JG, Matsuno S, Smith SN, Amey J, Anthony LH, Litchfield RP, Sztuc AA, Uchida Y, Wascko MO, Berardi V, Catanesi MG, Intonti RA, Radicioni E, Calabria NF, Machado LN, De Rosa G, Collazuol G, Iacob F, Lamoureux M, Ospina N, Ludovici L, Boschi T, Di Lodovico F, Sedgwick SM, Zsoldos S, Nishimura Y, Cao S, Friend M, Hasegawa T, Ishida T, Ishii T, Kobayashi T, Nakadaira T, Nakamura K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Abe K, Hasegawa M, Isobe Y, Miyabe H, Nakano Y, Shiozawa T, Sugimoto T, Suzuki AT, Takeuchi Y, Yamamoto S, Ali A, Ashida Y, Hayashino T, Hiraki T, Hirota S, Huang K, Ieki K, Jiang M, Kikawa T, Mori M, Murakami A, Nakamura KE, Nakaya T, Patel ND, Suzuki K, Takahashi S, Tateishi K, Wendell RA, McCauley N, Mehta P, Pritchard A, Tsui KM, Fukuda Y, Itow Y, Menjo H, Mitsuka G, Murase M, Muto F, Niwa T, Sato K, Suzuki T, Taani M, Tsukada M, Mijakowski P, Frankiewicz K, Hignight J, Jung CK, Liet al., 2020, Indirect search for dark matter from the Galactic Center and halo with the Super-Kamiokande detector, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 102, Pages: 072002 – 1-072002 – 14, ISSN: 1550-2368

We present a search for an excess of neutrino interactions due to dark matter in the form of weakly interacting massive particles (WIMPs) annihilating in the Galactic center or halo based on the data set of Super-Kamiokande-I, -II, -III and -IV taken from 1996 to 2016. We model the neutrino flux, energy, and flavor distributions assuming WIMP self-annihilation is dominant to ν¯ν, μ+μ−, b¯b, or W+W−. The excess is in comparison to atmospheric neutrino interactions which are modeled in detail and fit to data. Limits on the self-annihilation cross section ⟨σAV⟩ are derived for WIMP masses in the range 1 GeV to 10 TeV, reaching as low as 9.6×10−23  cm3 s−1 for 5 GeV WIMPs in b¯b mode and 1.2×10−24  cm3 s−1 for 1 GeV WIMPs in ν¯ν mode. The obtained sensitivity of the Super-Kamiokande detector to WIMP masses below several tens of GeV is the best among similar indirect searches to date.

Journal article

Abi B, Acciarri R, Acero MA, Adamov G, Adams D, Adinolfi M, Ahmad Z, Ahmed J, Alion T, Monsalve SA, Alt C, Anderson J, Andreopoulos C, Andrews MP, Andrianala F, Andringa S, Ankowski A, Antonova M, Antusch S, Aranda-Fernandez A, Ariga A, Arnold LO, Arroyave MA, Asaadi J, Aurisano A, Aushev V, Autiero D, Azfar F, Back H, Back JJ, Backhouse C, Baesso P, Bagby L, Bajou R, Balasubramanian S, Baldi P, Bambah B, Barao F, Barenboim G, Barker GJ, Barkhouse W, Barnes C, Barr G, Monarca JB, Barros N, Barrow JL, Bashyal A, Basque V, Bay F, Alba JLB, Beacom JF, Bechetoille E, Behera B, Bellantoni L, Bellettini G, Bellini V, Beltramello O, Belver D, Benekos N, Neves FB, Berger J, Berkman S, Bernardini P, Berner RM, Berns H, Bertolucci S, Betancourt M, Bezawada Y, Bhattacharjee M, Bhuyan B, Biagi S, Bian J, Biassoni M, Biery K, Bilki B, Bishai M, Bitadze A, Blake A, Siffert BB, Blaszczyk FDM, Blazey GC, Blucher E, Boissevain J, Bolognesi S, Bolton T, Bonesini M, Bongrand M, Bonini F, Booth A, Booth C, Bordoni S, Borkum A, Boschi T, Bostan N, Bour P, Boyd SB, Boyden D, Bracinik J, Braga D, Brailsford D, Brandt A, Bremer J, Brew C, Brianne E, Brice SJ, Brizzolari C, Bromberg C, Brooijmans G, Brooke J, Bross A, Brunetti G, Buchanan N, Budd H, Caiulo D, Calafiura P, Calcutt J, Calin M, Calvez S, Calvo E, Camilleri L, Caminata A, Campanelli M, Caratelli D, Carini G, Carlus B, Carniti P, Terrazas IC, Carranza H, Castillo A, Castromonte C, Cattadori C, Cavalier F, Cavanna F, Centro S, Cerati G, Cervelli A, Villanueva AC, Chalifour M, Chang C, Chardonnet E, Chatterjee A, Chattopadhyay S, Chaves J, Chen H, Chen M, Chen Y, Cherdack D, Chi C, Childress S, Chiriacescu A, Cho K, Choubey S, Christensen A, Christian D, Christodoulou G, Church E, Clarke P, Coan TE, Cocco AG, Coelho JAB, Conley E, Conrad JM, Convery M, Corwin L, Cotte P, Cremaldi L, Cremonesi L, Crespo-Anadón JI, Cristaldo E, Cross R, Cuesta C, Cui Y, Cussans D, Dabrowski M, Motta HD, Da Silva Peres L, David C, David Q, Davies GSet al., 2020, Long-baseline neutrino oscillation physics potential of the DUNE experiment, The European Physical Journal C, Vol: 80, Pages: 1-34, ISSN: 1434-6044

The sensitivity of the Deep Underground Neutrino Experiment (DUNE) to neutrino oscillation is determined, based on a full simulation, reconstruction, and event selection of the far detector and a full simulation and parameterized analysis of the near detector. Detailed uncertainties due to the flux prediction, neutrino interaction model, and detector effects are included. DUNE will resolve the neutrino mass ordering to a precision of 5σ, for all δCP values, after 2 years of running with the nominal detector design and beam configuration. It has the potential to observe charge-parity violation in the neutrino sector to a precision of 3σ (5σ) after an exposure of 5 (10) years, for 50% of all δCP values. It will also make precise measurements of other parameters governing long-baseline neutrino oscillation, and after an exposure of 15 years will achieve a similar sensitivity to sin22θ13 to current reactor experiments.

Journal article

Abe K, Akhlaq N, Akutsu R, Ali A, Alt C, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Arihara T, Asada Y, Ashida Y, Atkin ET, Awataguchi Y, Ban S, Barbi M, Barker GJ, Barr G, Barrow D, Barry C, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bonus T, Bourguille B, Boyd SB, Brailsford D, Bravar A, Bravo Berguño D, Bronner C, Bron S, Bubak A, Buizza Avanzini M, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Cicerchia M, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Doyle TA, Drapier O, Dumarchez J, Dunne P, Eguchi A, Eklund L, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda R, Fukuda Y, Fusshoeller K, Giganti C, Golan T, Gonin M, Gorin A, Guigue M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hassani S, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Hong Van NT, Honjo T, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Izumi N, Jakkapu M, Jamieson B, Jenkins SJ, Jesús-Valls C, Jiang M, Johnson S, Jonsson P, Jung CK, Junjie X, Jurj PB, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Kasetti SP, Kataoka Y, Katayama Y, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, Kikutani H, Kim H, King S, Kisiel J, Knight A, Knox A, Kobata T, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kostin A, Kowalik K, Kubo H, Kudenko Y, Kukita N, Kuribayashi S, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Last D, Laveder M, Lawe M, Licciardi M, Lindner T, Litchfield RP, Liu SL, Li X, Longhin A, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marinoet al., 2020, Measurement of the charged-current electron (anti-)neutrino inclusive cross-sections at the T2K off-axis near detector ND280, The Journal of High Energy Physics, Vol: 2020, Pages: 1-43, ISSN: 1029-8479

The electron (anti-)neutrino component of the T2K neutrino beam constitutes the largest background in the measurement of electron (anti-)neutrino appearance at the far detector. The electron neutrino scattering is measured directly with the T2K off-axis near detector, ND280. The selection of the electron (anti-)neutrino events in the plastic scintillator target from both neutrino and anti-neutrino mode beams is discussed in this paper. The flux integrated single differential charged-current inclusive electron (anti-)neutrino cross-sections, dσ/dp and dσ/d cos(θ), and the total cross-sections in a limited phase-space in momentum and scattering angle (p > 300 MeV/c and θ ≤ 45°) are measured using a binned maximum likelihood fit and compared to the neutrino Monte Carlo generator predictions, resulting in good agreement.

Journal article

Zyla PA, Barnett RM, Beringer J, Dahl O, Dwyer DA, Groom DE, Lin C-J, Lugovsky KS, Pianori E, Robinson DJ, Wohl CG, Yao W-M, Agashe K, Aielli G, Allanach BC, Amsler C, Antonelli M, Aschenauer EC, Asner DM, Baer H, Banerjee S, Baudis L, Bauer CW, Beatty JJ, Belousov VI, Bethke S, Bettini A, Biebel O, Black KM, Blucher E, Buchmuller O, Burkert V, Bychkov MA, Cahn RN, Carena M, Ceccucci A, Cerri A, Chakraborty D, Chivukula RS, Cowan G, D'Ambrosio G, Damour T, de Florian D, de Gouvea A, DeGrand T, de Jong P, Dissertori G, Dobrescu BA, D'Onofrio M, Doser M, Drees M, Dreiner HK, Eerola P, Egede U, Eidelman S, Ellis J, Erler J, Ezhela VV, Fetscher W, Fields BD, Foster B, Freitas A, Gallagher H, Garren L, Gerber H-J, Gerbier G, Gershon T, Gershtein Y, Gherghetta T, Godizov AA, Gonzalez-Garcia MC, Goodman M, Grab C, Gritsan AV, Grojean C, Gruenewald M, Gurtu A, Gutsche T, Haber HE, Hanhart C, Hashimoto S, Hayato Y, Hebecker A, Heinemeyer S, Heltsley B, Hernandez-Rey JJ, Hikasa K, Hisano J, Hocker A, Holder J, Holtkamp A, Huston J, Hyodo T, Johnson KF, Kado M, Karliner M, Katz UF, Kenzie M, Khoze VA, Klein SR, Klempt E, Kowalewski RV, Krauss F, Kreps M, Krusche B, Kwon Y, Lahav O, Laiho J, Lellouch LP, Lesgourgues J, Liddle AR, Ligeti Z, Lippmann C, Liss TM, Littenberg L, Lourenco C, Lugovsky SB, Lusiani A, Makida Y, Maltoni F, Mannel T, Manohar AV, Marciano WJ, Masoni A, Matthews J, Meissner U-G, Mikhasenko M, Miller DJ, Milstead D, Mitchell RE, Moenig K, Molaro P, Moortgat F, Moskovic M, Nakamura K, Narain M, Nason P, Navas S, Neubert M, Nevski P, Nir Y, Olive KA, Patrignani C, Peacock JA, Petcov ST, Petrov VA, Pich A, Piepke A, Pomarol A, Profumo S, Quadt A, Rabbertz K, Rademacker J, Raffelt G, Ramani H, Ramsey-Musolf M, Ratcliff BN, Richardson P, Ringwald A, Roesler S, Rolli S, Romaniouk A, Rosenberg LJ, Rosner JL, Rybka G, Ryskin M, Ryutin RA, Sakai Y, Salam GP, Sarkar S, Sauli F, Schneider O, Scholberg K, Schwartz AJ, Schwiening J, Scott D, Sharma V, Sharpe SR, Shutt Tet al., 2020, Review of particle physics, Progress of Theoretical and Experimental Physics, Vol: 2020, Pages: 1-2093, ISSN: 0033-068X

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,324 new measurements from 878 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and search limits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as Higgs Boson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology, Particle Detectors, Colliders, Probability and Statistics. Among the 120 reviews are many that are new or heavily revised, including a new review on High Energy Soft QCD and Diffraction and one on the Determination of CKM Angles from B Hadrons.The Review is divided into two volumes. Volume 1 includes the Summary Tables and 98 review articles. Volume 2 consists of the Particle Listings and contains also 22 reviews that address specific aspects of the data presented in the Listings.The complete Review (both volumes) is published online on the website of the Particle Data Group (pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Booklet with the Summary Tables and essential tables, figures, and equations from selected review articles is available in print and as a web version optimized for use on phones as well as an Android app.

Journal article

Abi B, Acciarri R, Acero MA, Adamov G, Adams D, Adinolfi M, Ahmad Z, Ahmed J, Alion T, Monsalve SA, Alt C, Anderson J, Andreopoulos C, Andrews M, Andrianala F, Andringa S, Ankowski A, Antonova M, Antusch S, Aranda-Fernandez A, Ariga A, Arnold LO, Arroyave MA, Asaadi J, Aurisano A, Aushev V, Autiero D, Azfar F, Back H, Back JJ, Backhouse C, Baesso P, Bagby L, Bajou R, Balasubramanian S, Baldi P, Bambah B, Barao F, Barenboim G, Barker G, Barkhouse W, Barnes C, Barr G, Barranco Monarca J, Barros N, Barrow JL, Bashyal A, Basque V, Bay F, Bazo Alba J, Beacom JF, Bechetoille E, Behera B, Bellantoni L, Bellettini G, Bellini V, Beltramello O, Belver D, Benekos N, Neves FB, Berger J, Berkman S, Bernardini P, Berner RM, Berns H, Bertolucci S, Betancourt M, Bezawada Y, Bhattacharjee M, Bhuyan B, Biagi S, Bian J, Biassoni M, Biery K, Bilki B, Bishai M, Bitadze A, Blake A, Siffert BB, Blaszczyk F, Blazey G, Blucher E, Boissevain J, Bolognesi S, Bolton T, Bonesini M, Bongrand M, Bonini F, Booth A, Booth C, Bordoni S, Borkum A, Boschi T, Bostan N, Bour P, Boyd S, Boyden D, Bracinik J, Braga D, Brailsford D, Brandt A, Bremer J, Brew C, Brianne E, Brice SJ, Brizzolari C, Bromberg C, Brooijmans G, Brooke J, Bross A, Brunetti G, Buchanan N, Budd H, Caiulo D, Calafiura P, Calcutt J, Calin M, Calvez S, Calvo E, Camilleri L, Caminata A, Campanelli M, Caratelli D, Carini G, Carlus B, Carniti P, Terrazas IC, Carranza H, Castillo A, Castromonte C, Cattadori C, Cavalier F, Cavanna F, Centro S, Cerati G, Cervelli A, Cervera Villanueva A, Chalifour M, Chang C, Chardonnet E, Chatterjee A, Chattopadhyay S, Chaves J, Chen H, Chen M, Chen Y, Cherdack D, Chi C, Childress S, Chiriacescu A, Cho K, Choubey S, Christensen A, Christian D, Christodoulou G, Church E, Clarke P, Coan TE, Cocco AG, Coelho J, Conley E, Conrad J, Convery M, Corwin L, Cotte P, Cremaldi L, Cremonesi L, Crespo-Anadon J, Cristaldo E, Cross R, Cuesta C, Cui Y, Cussans D, Dabrowski M, Da Motta H, Peres LDS, David Q, Davies GS, Davinet al., 2020, Volume III DUNE far detector technical coordination, Journal of Instrumentation, Vol: 15, Pages: 1-193, ISSN: 1748-0221

The preponderance of matter over antimatter in the early universe, the dynamics of the supernovae that produced the heavy elements necessary for life, and whether protons eventually decay—these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our universe, its current state, and its eventual fate. The Deep Underground Neutrino Experiment (DUNE) is an international world-class experiment dedicated to addressing these questions as it searches for leptonic charge-parity symmetry violation, stands ready to capture supernova neutrino bursts, and seeks to observe nucleon decay as a signature of a grand unified theory underlying the standard model. The DUNE far detector technical design report (TDR) describes the DUNE physics program and the technical designs of the single- and dual-phase DUNE liquid argon TPC far detector modules. Volume III of this TDR describes how the activities required to design, construct, fabricate, install, and commission the DUNE far detector modules are organized and managed. This volume details the organizational structures that will carry out and/or oversee the planned far detector activities safely, successfully, on time, and on budget. It presents overviews of the facilities, supporting infrastructure, and detectors for context, and it outlines the project-related functions and methodologies used by the DUNE technical coordination organization, focusing on the areas of integration engineering, technical reviews, quality assurance and control, and safety oversight. Because of its more advanced stage of development, functional examples presented in this volume focus primarily on the single-phase (SP) detector module.

Journal article

Abi B, Acciarri R, Acero MA, Adamov G, Adams D, Adinolfi M, Ahmad Z, Ahmed J, Alion T, Monsalve SA, Alt C, Anderson J, Andreopoulos C, Andrews M, Andrianala F, Andringa S, Ankowski A, Antonova M, Antusch S, Aranda-Fernandez A, Ariga A, Arnold LO, Arroyave MA, Asaadi J, Aurisano A, Aushev V, Autiero D, Azfar F, Back H, Back JJ, Backhouse C, Baesso P, Bagby L, Bajou R, Balasubramanian S, Baldi P, Bambah B, Barao F, Barenboim G, Barker G, Barkhouse W, Barnes C, Barr G, Barranco Monarca J, Barros N, Barrow JL, Bashyal A, Basque V, Bay F, Bazo Alba J, Beacom JF, Bechetoille E, Behera B, Bellantoni L, Bellettini G, Bellini V, Beltramello O, Belver D, Benekos N, Neves FB, Berger J, Berkman S, Bernardini P, Berner RM, Berns H, Bertolucci S, Betancourt M, Bezawada Y, Bhattacharjee M, Bhuyan B, Biagi S, Bian J, Biassoni M, Biery K, Bilki B, Bishai M, Bitadze A, Blake A, Siffert BB, Blaszczyk F, Blazey G, Blucher E, Boissevain J, Bolognesi S, Bolton T, Bonesini M, Bongrand M, Bonini F, Booth A, Booth C, Bordoni S, Borkum A, Boschi T, Bostan N, Bour P, Boyd S, Boyden D, Bracinik J, Braga D, Brailsford D, Brandt A, Bremer J, Brew C, Brianne E, Brice SJ, Brizzolari C, Bromberg C, Brooijmans G, Brooke J, Bross A, Brunetti G, Buchanan N, Budd H, Caiulo D, Calafiura P, Calcutt J, Calin M, Calvez S, Calvo E, Camilleri L, Caminata A, Campanelli M, Caratelli D, Carini G, Carlus B, Carniti P, Terrazas IC, Carranza H, Castillo A, Castromonte C, Cattadori C, Cavalier F, Cavanna F, Centro S, Cerati G, Cervelli A, Cervera Villanueva A, Chalifour M, Chang C, Chardonnet E, Chatterjee A, Chattopadhyay S, Chaves J, Chen H, Chen M, Chen Y, Cherdack D, Chi C, Childress S, Chiriacescu A, Cho K, Choubey S, Christensen A, Christian D, Christodoulou G, Church E, Clarke P, Coan TE, Cocco AG, Coelho J, Conley E, Conrad J, Convery M, Corwin L, Cotte P, Cremaldi L, Cremonesi L, Crespo-Anadon J, Cristaldo E, Cross R, Cuesta C, Cui Y, Cussans D, Dabrowski M, Da Motta H, Peres LDS, David Q, Davies GS, Davinet al., 2020, Executive summary, JOURNAL OF INSTRUMENTATION, Vol: 15, Pages: 2-+, ISSN: 1748-0221

The preponderance of matter over antimatter in the early universe, the dynamics of the supernovae that produced the heavy elements necessary for life, and whether protons eventually decay—these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our universe, its current state, and its eventual fate. The Deep Underground Neutrino Experiment (DUNE) is an international world-class experiment dedicated to addressing these questions as it searches for leptonic charge-parity symmetry violation, stands ready to capture supernova neutrino bursts, and seeks to observe nucleon decay as a signature of a grand unified theory underlying the standard model. The DUNE far detector technical design report (TDR) describes the DUNE physics program and the technical designs of the single- and dual-phase DUNE liquid argon TPC far detector modules. This TDR is intended to justify the technical choices for the far detector that flow down from the high-level physics goals through requirements at all levels of the Project. Volume I contains an executive summary that introduces the DUNE science program, the far detector and the strategy for its modular designs, and the organization and management of the Project. The remainder of Volume I provides more detail on the science program that drives the choice of detector technologies and on the technologies themselves. It also introduces the designs for the DUNE near detector and the DUNE computing model, for which DUNE is planning design reports. Volume II of this TDR describes DUNE's physics program in detail. Volume III describes the technical coordination required for the far detector design, construction, installation, and integration, and its organizational structure. Volume IV describes the single-phase far detector technology. A planned Volume V will describe the dual-phase technology.

Journal article

Abi B, Acciarri R, Acero MA, Adamov G, Adams D, Adinolfi M, Ahmad Z, Ahmed J, Alion T, Monsalve SA, Alt C, Anderson J, Andreopoulos C, Andrews M, Andrianala F, Andringa S, Ankowski A, Antonova M, Antusch S, Aranda-Fernandez A, Ariga A, Arnold LO, Arroyave MA, Asaadi J, Aurisano A, Aushev V, Autiero D, Azfar F, Back H, Back JJ, Backhouse C, Baesso P, Bagby L, Bajou R, Balasubramanian S, Baldi P, Bambah B, Barao F, Barenboim G, Barker G, Barkhouse W, Barnes C, Barr G, Barranco Monarca J, Barros N, Barrow JL, Bashyal A, Basque V, Bay F, Bazo Alba J, Beacom JF, Bechetoille E, Behera B, Bellantoni L, Bellettini G, Bellini V, Beltramello O, Belver D, Benekos N, Neves FB, Berger J, Berkman S, Bernardini P, Berner RM, Berns H, Bertolucci S, Betancourt M, Bezawada Y, Bhattacharjee M, Bhuyan B, Biagi S, Bian J, Biassoni M, Biery K, Bilki B, Bishai M, Bitadze A, Blake A, Siffert BB, Blaszczyk F, Blazey G, Blucher E, Boissevain J, Bolognesi S, Bolton T, Bonesini M, Bongrand M, Bonini F, Booth A, Booth C, Bordoni S, Borkum A, Boschi T, Bostan N, Bour P, Boyd S, Boyden D, Bracinik J, Braga D, Brailsford D, Brandt A, Bremer J, Brew C, Brianne E, Brice SJ, Brizzolari C, Bromberg C, Brooijmans G, Brooke J, Bross A, Brunetti G, Buchanan N, Budd H, Caiulo D, Calafiura P, Calcutt J, Calin M, Calvez S, Calvo E, Camilleri L, Caminata A, Campanelli M, Caratelli D, Carini G, Carlus B, Carniti P, Terrazas IC, Carranza H, Castillo A, Castromonte C, Cattadori C, Cavalier F, Cavanna F, Centro S, Cerati G, Cervelli A, Cervera Villanueva A, Chalifour M, Chang C, Chardonnet E, Chatterjee A, Chattopadhyay S, Chaves J, Chen H, Chen M, Chen Y, Cherdack D, Chi C, Childress S, Chiriacescu A, Cho K, Choubey S, Christensen A, Christian D, Christodoulou G, Church E, Clarke P, Coan TE, Cocco AG, Coelho J, Conley E, Conrad J, Convery M, Corwin L, Cotte P, Cremaldi L, Cremonesi L, Crespo-Anadon J, Cristaldo E, Cross R, Cuesta C, Cui Y, Cussans D, Dabrowski M, Da Motta H, Peres LDS, David Q, Davies GS, Davinet al., 2020, Volume IV The DUNE far detector single-phase technology, Journal of Instrumentation, Vol: 15, Pages: 1-619, ISSN: 1748-0221

The preponderance of matter over antimatter in the early universe, the dynamics of the supernovae that produced the heavy elements necessary for life, and whether protons eventually decay—these mysteries at the forefront of particle physics and astrophysics are key to understanding the early evolution of our universe, its current state, and its eventual fate. DUNE is an international world-class experiment dedicated to addressing these questions as it searches for leptonic charge-parity symmetry violation, stands ready to capture supernova neutrino bursts, and seeks to observe nucleon decay as a signature of a grand unified theory underlying the standard model. Central to achieving DUNE's physics program is a far detector that combines the many tens-of-kiloton fiducial mass necessary for rare event searches with sub-centimeter spatial resolution in its ability to image those events, allowing identification of the physics signatures among the numerous backgrounds. In the single-phase liquid argon time-projection chamber (LArTPC) technology, ionization charges drift horizontally in the liquid argon under the influence of an electric field towards a vertical anode, where they are read out with fine granularity. A photon detection system supplements the TPC, directly enhancing physics capabilities for all three DUNE physics drivers and opening up prospects for further physics explorations. The DUNE far detector technical design report (TDR) describes the DUNE physics program and the technical designs of the single- and dual-phase DUNE liquid argon TPC far detector modules. Volume IV presents an overview of the basic operating principles of a single-phase LArTPC, followed by a description of the DUNE implementation. Each of the subsystems is described in detail, connecting the high-level design requirements and decisions to the overriding physics goals of DUNE.

Journal article

Jones SB, Nonnenmacher TS, Atkin E, Barker GJ, Basharina-Freshville A, Betancourt C, Boyd SB, Brailsford D, Chen-Wishart Z, Cremonesi L, Deisting A, Dias A, Dunne P, Haigh J, Hamacher-Baumann P, Kaboth A, Korzenev A, Ma W, Mermod P, Mironova M, Monroe J, Nichol R, Nowak J, Parker W, Ritchie-Yates H, Roth S, Saakyan R, Serra N, Shitov Y, Steinmann J, Tarrant A, Uchida MA, Valder S, Waldron AV, Ward M, Wascko MOet al., 2020, Off-axis characterisation of the CERN T10 beam for low momentum proton measurements with a high pressure gas time projection chamber, Instruments, Vol: 4, Pages: 21-21, ISSN: 2410-390X

We present studies of proton fluxes in the T10 beamline at CERN. A prototype high pressure gas time projection chamber (TPC) was exposed to the beam of protons and other particles, using the 0.8 GeV/c momentum setting in T10, in order to make cross section measurements of low energy protons in argon. To explore the energy region comparable to hadrons produced by GeV-scale neutrino interactions at oscillation experiments, i.e., near 0.1 GeV of kinetic energy, methods of moderating the T10 beam were employed: the dual technique of moderating the beam with acrylic blocks and measuring scattered protons off the beam axis was used to decrease the kinetic energy of incident protons, as well as change the proton/minimum ionising particle (MIP) composition of the incident flux. Measurements of the beam properties were made using time of flight systems upstream and downstream of the TPC. The kinetic energy of protons reaching the TPC was successfully changed from ∼0.3 GeV without moderator blocks to less than 0.1 GeV with four moderator blocks (40 cm path length). The flux of both protons and MIPs off the beam axis was increased. The ratio of protons to MIPs vary as a function of the off-axis angle allowing for possible optimisation of the detector to select the type of required particles. Simulation informed by the time of flight measurements show that with four moderator blocks placed in the beamline, (5.6 ± 0.1) protons with energies below 0.1 GeV per spill traversed the active TPC region. Measurements of the beam composition and energy are presented.

Journal article

Abe K, Akutsu R, Ali A, Alt C, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Ashida Y, Atkin ET, Awataguchi Y, Ban S, Barbi M, Barker GJ, Barr G, Barry C, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berkman S, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bourguille B, Boyd SB, Brailsford D, Bravar A, Bronner C, Avanzini MB, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Drapier O, Dumarchez J, Dunne P, Eklund L, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda R, Fukuda Y, Gameil K, Giganti C, Golan T, Gonin M, Gorin A, Guigue M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Hong Van NT, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Jamieson B, Jenkins SJ, Jesus-Valls C, Jiang M, Johnson S, Jonsson P, Jung CK, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Kataoka Y, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kim H, Kim J, King S, Kisiel J, Knight A, Knox A, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kowalik K, Kubo H, Kudenko Y, Kukita N, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Laveder M, Lawe M, Licciardi M, Lindner T, Litchfield RP, Liu SL, Li X, Longhin A, Ludovici L, Lu X, Lux T, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Martin JF, Maruyama T, Matsubara T, Matsushita K, Matveev V, Mavrokoridis K, Mazzucato E, McCarthy M, McCauley N, McFarland KS, McGrew C, Mefodiev A, Metelko C, Mezzetto M, Minamino A, Mineev O, Mine S, Miura M, Bueno LM, Moriyama S, Morrison J, Mueller TA, Munteanet al., 2020, First measurement of the charged current (nu)over-bar(mu) double differential cross section on a water target without( )pions in the final state, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 102, Pages: 1-16, ISSN: 1550-2368

This paper reports the first differential measurement of the charged-current ¯νμ interaction cross section on water with no pions in the final state. The unfolded flux-averaged measurement using the T2K off-axis near detector is given in double-differential bins of μ+ momentum and angle. The integrated cross section in a restricted phase space is σ=(1.11±0.18)×10−38  cm2 per water molecule. Comparisons with several nuclear models are also presented.

Journal article

Abe K, Akhlaq N, Akutsu R, Ali A, Alt C, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Arihara T, Asada Y, Ashida Y, Atkin ET, Awataguchi Y, Ban S, Barbi M, Barker GJ, Barr G, Barrow D, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berns L, Bhadra S, Bienstock S, Bolognesi S, Bonus T, Bourguille B, Boyd SB, Bravar A, Bravo Berguno D, Bronner C, Bron S, Bubak A, Avanzini MB, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Cherdack D, Chikuma N, Christodoulou G, Cicerchia M, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Doyle TA, Drapier O, Dumarchez J, Dunne P, Eguchi A, Eklund L, Emery-Schrenk S, Ereditato A, Finch AJ, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda R, Fukuda Y, Fusshoeller K, Giganti C, Gonin M, Gorin A, Guigue M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hassani S, Hastings NC, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Van NTH, Honjo T, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishitsuka M, Iwamoto K, Izmaylov A, Izumi N, Jakkapu M, Jamieson B, Jenkins SJ, Jesus-Valls C, Jiang M, Jonsson P, Jung CK, Junjie X, Jurj PB, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Kasetti SP, Kataoka Y, Katayama Y, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, Kikutani H, Kim H, King S, Kisiel J, Knight A, Kobata T, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kostin A, Kowalik K, Kubo H, Kudenko Y, Kukita N, Kuribayashi S, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Last D, Lawe M, Licciardi M, Litchfield RP, Liu SL, Li X, Longhin A, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Marti-Magro L, Maruyama T, Matsubara T, Matsushita K, Matveev V, Mauger C, Mavrokoridis K, Mazzucato E, McCauley N, McElwee J, McFarland KS, McGrew C, Mefodiev A, Metelko C, Mezzetto M, Minamino Aet al., 2020, Simultaneous measurement of the muon neutrino charged-current cross section on oxygen and carbon without pions in the final state at T2K, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 101, Pages: 112004 – 1-112004 – 32, ISSN: 1550-2368

This paper reports the first simultaneous measurement of the double differential muon neutrino charged-current cross section on oxygen and carbon without pions in the final state as a function of the outgoing muon kinematics, made at the ND280 off-axis near detector of the T2K experiment. The ratio of the oxygen and carbon cross sections is also provided to help validate various models’ ability to extrapolate between carbon and oxygen nuclear targets, as is required in T2K oscillation analyses. The data are taken using a neutrino beam with an energy spectrum peaked at 0.6 GeV. The extracted measurement is compared with the prediction from different Monte Carlo neutrino-nucleus interaction event generators, showing particular model separation for very forward-going muons. Overall, of the models tested, the result is best described using local Fermi gas descriptions of the nuclear ground state with RPA suppression.

Journal article

Abe K, Akhlaq N, Akutsu R, Ali A, Alt C, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Arihara T, Asada Y, Ashida Y, Atkin ET, Awataguchi Y, Ban S, Barbi M, Barker GJ, Barr G, Barrow D, Barry C, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bonus T, Bourguille B, Boyd SB, Brailsford D, Bravar A, Bravo Berguno D, Bronner C, Bron S, Bubak A, Avanzini MB, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Cicerchia M, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Doyle TA, Drapier O, Dumarchez J, Dunne P, Eguchi A, Eklund L, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda R, Fukuda Y, Fusshoeller K, Giganti C, Golan T, Gonin M, Gorin A, Guigue M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hassani S, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Van NTH, Honjo T, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Izumi N, Jakkapu M, Jamieson B, Jenkins SJ, Jesus-Valls C, Jiang M, Johnson S, Jonsson P, Jung CK, Junjie X, Jurj PB, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Kasetti SP, Kataoka Y, Katayama Y, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, Kikutani H, Kim H, King S, Kisiel J, Knight A, Knox A, Kobata T, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kostin A, Kowalik K, Kubo H, Kudenko Y, Kukita N, Kuribayashi S, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Last D, Laveder M, Lawe M, Licciardi M, Lindner T, Litchfield RP, Liu SL, Li X, Longhin A, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Marti-et al., 2020, First combined measurement of the muon neutrino and antineutrino charged-current cross section without pions in the final state at T2K, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 101, Pages: 112001 – 1-112001 – 44, ISSN: 1550-2368

This paper presents the first combined measurement of the double-differential muon neutrino and antineutrino charged-current cross sections with no pions in the final state on hydrocarbon at the off-axis near detector of the T2K experiment. The data analyzed in this work comprise 5.8×1020 and 6.3×1020 protons on target in neutrino and antineutrino mode respectively, at a beam energy peak of 0.6 GeV. Using the two measured cross sections, the sum, difference, and asymmetry were calculated with the aim of better understanding the nuclear effects involved in such interactions. The extracted measurements have been compared with the prediction from different Monte Carlo generators and theoretical models showing that the difference between the two cross sections have interesting sensitivity to nuclear effects.

Journal article

Abe K, Akutsu R, Ali A, Alt C, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Asada Y, Ashida Y, Atkin ET, Awataguchi Y, Ban S, Barbi M, Barker GJ, Barr G, Barrow D, Barry C, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berkman S, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bourguille B, Boyd SB, Brailsford D, Bravar A, Bravo Berguno D, Bronner C, Bubak A, Avanzini MB, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Doyle TA, Drapier O, Dumarchez J, Dunne P, Eklund L, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda R, Fukuda Y, Fusshoeller K, Gameil K, Giganti C, Golan T, Gonin M, Gorin A, Guigue M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Van NTH, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Jakkapu M, Jamieson B, Jenkins SJ, Jesus-Valls C, Jiang M, Johnson S, Jonsson P, Jung CK, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Kasetti SP, Kataoka Y, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, Kim H, Kim J, King S, Kisiel J, Knight A, Knox A, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kostin A, Kowalik K, Kubo H, Kudenko Y, Kukita N, Kuribayashi S, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Laveder M, Lawe M, Licciardi M, Lindner T, Litcheld RP, Liu SL, Li X, Longhin A, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Marti-Magro L, Martin JF, Maruyama T, Matsubara T, Matsushita K, Matveev V, Mavrokoridis K, Mazzucato E, McCarthy M, McCauley N, Mcet al., 2020, Search for electron antineutrino appearance in a long-baseline muon antineutrino beam, Physical Review Letters, Vol: 124, Pages: 161802-1-161802-8, ISSN: 0031-9007

Electron antineutrino appearance is measured by the T2K experiment in an accelerator-produced antineutrino beam, using additional neutrino beam operation to constrain parameters of the Pontecorvo-Maki-Nakagawa-Sakata (PMNS) mixing matrix. T2K observes 15 candidate electron antineutrino events with a background expectation of 9.3 events. Including information from the kinematic distribution of observed events, the hypothesis of no electron antineutrino appearance is disfavored with a significance of 2.40σ and no discrepancy between data and PMNS predictions is found. A complementary analysis that introduces an additional free parameter which allows non-PMNS values of electron neutrino and antineutrino appearance also finds no discrepancy between data and PMNS predictions.

Journal article

Abe K, Akutsu R, Ali A, Alt C, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Ashida Y, Atkin ET, Awataguchi Y, Ban S, Barbi M, Barker GJ, Barr G, Barry C, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berkman S, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bourguille B, Boyd SB, Brailsford D, Bravar A, Berguno DB, Bronner C, Bubak A, Avanzini MB, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Drapier O, Dumarchez J, Dunne P, Eklund L, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda R, Fukuda Y, Gameil K, Giganti C, Golan T, Gonin M, Gorin A, Guigue M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Hong Van NT, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Jamieson B, Jenkins SJ, Jesus-Valls C, Jiang M, Johnson S, Jonsson P, Jung CK, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Kasetti SP, Kataoka Y, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, Kim H, Kim J, King S, Kisiel J, Knight A, Knox A, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kowalik K, Kubo H, Kudenko Y, Kukita N, Kuribayashi S, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Laveder M, Lawe M, Licciardi M, Lindner T, Litchfield RP, Liu SL, Li X, Longhin A, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Martin JF, Maruyama T, Matsubara T, Matsushita K, Matveev V, Mavrokoridis K, Mazzucato E, McCarthy M, McCauley N, McFarland KS, McGrew C, Mefodiev A, Metelko C, Mezzetto M, Minamino A, Mineev Oet al., 2020, Constraint on the matter-antimatter symmetry-violating phase in neutrino oscillations, Nature, Vol: 580, Pages: 339-344, ISSN: 0028-0836

The charge-conjugation and parity-reversal (CP) symmetry of fundamental particles is a symmetry between matter and antimatter. Violation of this CP symmetry was first observed in 19641, and CP violation in the weak interactions of quarks was soon established2. Sakharov proposed3 that CP violation is necessary to explain the observed imbalance of matter and antimatter abundance in the Universe. However, CP violation in quarks is too small to support this explanation. So far, CP violation has not been observed in non-quark elementary particle systems. It has been shown that CP violation in leptons could generate the matter–antimatter disparity through a process called leptogenesis4. Leptonic mixing, which appears in the standard model’s charged current interactions5,6, provides a potential source of CP violation through a complex phase δCP, which is required by some theoretical models of leptogenesis7,8,9. This CP violation can be measured in muon neutrino to electron neutrino oscillations and the corresponding antineutrino oscillations, which are experimentally accessible using accelerator-produced beams as established by the Tokai-to-Kamioka (T2K) and NOvA experiments10,11. Until now, the value of δCP has not been substantially constrained by neutrino oscillation experiments. Here we report a measurement using long-baseline neutrino and antineutrino oscillations observed by the T2K experiment that shows a large increase in the neutrino oscillation probability, excluding values of δCP that result in a large increase in the observed antineutrino oscillation probability at three standard deviations (3σ). The 3σ confidence interval for δCP, which is cyclic and repeats every 2π, is [−3.41, −0.03] for the so-called normal mass ordering and [−2.54, −0.32] for the inverted mass ordering. Our results indicate CP violation in leptons and our method enables sensitive searches for matter–antimatter

Journal article

Abe K, Akutsu R, Ali A, Alt C, Amey J, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Ashida Y, Atkin ET, Awataguchi Y, Azuma Y, Ban S, Barbi M, Barker GJ, Barr G, Barry C, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berkman S, Berner RM, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bordoni S, Bourguille B, Boyd SB, Brailsford D, Bravar A, Bronner C, Avanzini MB, Calcutt J, Calland RG, Campbell T, Cao S, Cartwright SL, Castillo R, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Drapier O, Duffy KE, Dumarchez J, Dunne P, Eklund L, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda R, Fukuda Y, Gameil K, Garcia A, Giganti C, Gizzarelli F, Golan T, Gonin M, Gorin A, Guigue M, Hadley DR, Haegel L, Haigh JT, Hamacher-Baumann P, Hansen D, Harada J, Hartz M, Hasegawa T, Hastings NC, Hayashino T, Hayato Y, Hillairet A, Hiraki T, Hiramoto A, Hirota S, Hogan M, Holeczek J, Van NTH, Hosomi F, Huang K, Iacob F, Ichikawa AK, Ikeda M, Imber J, Inoue T, Insler J, Intonti RA, Ishida T, Ishii T, Ishitsuka M, Iwai E, Iwamoto K, Izmaylov A, Jamieson B, Jenkins SJ, Jesus-Valls C, Jiang M, Johnson S, Jonsson P, Jung CK, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Kataoka Y, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kim H, Kim J, King S, Kisiel J, Knight A, Knox A, Kobayashi T, Koch L, Koga T, Koller PP, Konaka A, Kormos LL, Koshio Y, Kowalik K, Kubo H, Kudenko Y, Kukita N, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamont I, Lamoureux M, Lasorak P, Laveder M, Lawe M, Licciardi M, Lindner T, Liptak ZJ, Litchfield RP, Liu SL, Li X, Longhin A, Lopez JP, Lou T, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek Met al., 2020, Measurement of the muon neutrino charged-current single pi(+) production on hydrocarbon using the T2K off-axis near detector ND280, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 101, ISSN: 1550-2368

We report the measurements of the single and double differential cross section of muon neutrino charged-current interactions on carbon with a single positively charged pion in the final state at the T2K off-axis near detector using 5.56×1020 protons on target. The analysis uses data control samples for the background subtraction and the cross section signal, defined as a single negatively charged muon and a single positively charged pion exiting from the target nucleus, is extracted using an unfolding method. The model-dependent cross section, integrated over the T2K off-axis neutrino beam spectrum peaking at 0.6 GeV, is measured to be σ=(11.76±0.44(stat)±2.39(syst))×10−40  cm2 nucleon−1. Various differential cross sections are measured, including the first measurement of the Adler angles for single charged pion production in neutrino interactions with heavy nuclei target.

Journal article

Abe K, Akutsu R, Ali A, Alt C, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Ashida Y, Atkin ET, Awataguchi Y, Ban S, Barbi M, Barker GJ, Barr G, Barry C, Batkiewicz-Kwasniak M, Beloshapkin A, Bench F, Berardi V, Berkman S, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bourguille B, Boyd SB, Brailsford D, Bravar A, Berguno DB, Bronner C, Bubak A, Avanzini MB, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Coleman J, Collazuol G, Cook L, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Drapier O, Dumarchez J, Dunne P, Eklund L, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda R, Fukuda Y, Gameil K, Giganti C, Golan T, Gonin M, Gorin A, Guigue M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Hong Van NT, Iacob F, Ichikawa AK, Ikeda M, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Jamieson B, Jenkins SJ, Jesus-Valls C, Jiang M, Johnson S, Jonsson P, Jung CK, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Kasetti SP, Kataoka Y, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kikawa T, Kim H, Kim J, King S, Kisiel J, Knight A, Knox A, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kowalik K, Kubo H, Kudenko Y, Kukita N, Kuribayashi S, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Laveder M, Lawe M, Licciardi M, Lindner T, Litchfield RP, Liu SL, Li X, Longhin A, Ludovici L, Lu X, Lux T, Machado LN, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Martin JF, Maruyama T, Matsubara T, Matsushita K, Matveev V, Mavrokoridis K, Mazzucato E, McCarthy M, McCauley N, McFarland KS, McGrew C, Mefodiev A, Metelko C, Mezzetto M, Minamino A, Mineev Oet al., 2019, Measurement of neutrino and antineutrino neutral-current quasielasticlike interactions on oxygen by detecting nuclear deexcitation gamma rays, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 100, Pages: 1-19, ISSN: 1550-2368

Neutrino- and antineutrino-oxygen neutral-current quasielasticlike interactions are measured at Super-Kamiokande using nuclear deexcitation γ rays to identify signal-like interactions in data from a 14.94(16.35)×1020 protons-on-target exposure of the T2K neutrino (antineutrino) beam. The measured flux-averaged cross sections on oxygen nuclei are ⟨σν−NCQE⟩=1.70±0.17(stat.)+0.51−0.38(syst.)×10−38  cm2/oxygen with a flux-averaged energy of 0.82 GeV and ⟨σ¯ν−NCQE⟩=0.98±0.16(stat.)+0.26−0.19(syst.)×10−38  cm2/oxygen with a flux-averaged energy of 0.68 GeV, for neutrinos and antineutrinos, respectively. These results are the most precise to date, and the antineutrino result is the first cross section measurement of this channel. They are compared with various theoretical predictions. The impact on evaluation of backgrounds to searches for supernova relic neutrinos at present and future water Cherenkov detectors is also discussed.

Journal article

Simpson C, Abe K, Bronner C, Hayato Y, Ikeda M, Ito H, Iyogi K, Kameda J, Kataoka Y, Kato Y, Kishimoto Y, Marti L, Miura M, Moriyama S, Mochizuki T, Nakahata M, Nakajima Y, Nakayama S, Okada T, Okamoto K, Orii A, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Takeda A, Takenaka A, Tanaka H, Yano T, Akutsu R, Kajita T, Okumura K, Wang R, Xia J, Bravo-Berguno D, Labarga L, Fernandez P, Blaszczyk FDM, Kachulis C, Kearns E, Raaf JL, Stone JL, Wan L, Wester T, Sussman S, Berkman S, Bian J, Griskevich NJ, Kropp WR, Locke S, Mine S, Smy MB, Sobel HW, Takhistov V, Weatherly P, Ganezer KS, Hill J, Kim JY, Lim IT, Park RG, Bodur B, Scholberg K, Walter CW, Coffani A, Drapier O, Gonin M, Imber J, Mueller TA, Paganini P, Ishizuka T, Nakamura T, Jang JS, Choi K, Learned JG, Matsuno S, Litchfield RP, Sztuc AA, Uchida Y, Wascko MO, Berardi V, Calabria NF, Catanesi MG, Intonti RA, Radicioni E, De Rosa G, Collazuol G, Iacob F, Ludovici L, Nishimura Y, Cao S, Friend M, Hasegawa T, Ishida T, Kobayashi T, Nakadaira T, Nakamura K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Abe KE, Hasegawa M, Isobe Y, Miyabe H, Nakano Y, Shiozawa T, Sugimoto T, Suzuki AT, Takeuchi Y, Ali A, Ashida Y, Hayashino T, Hirota S, Jiang M, Kikawa T, Mori M, Nakamura KE, Nakaya T, Wendell RA, Anthony LH, McCauley N, Pritchard A, Tsui KM, Fukuda Y, Itow Y, Murrase M, Niwa T, Taani M, Tsukada M, Mijakowski P, Frankiewicz K, Jung CK, Li X, Palomino JL, Santucci G, Vilela C, Wilking MJ, Yanagisawa C, Fukuda D, Harada M, Hagiwara K, Horai T, Ishino H, Ito S, Koshio Y, Sakuda M, Takahira Y, Xu C, Kuno Y, Cook L, Wark D, Di Lodovico F, Sedgwick SM, Richards B, Zsoldos S, Kim SB, Tacik R, Thiesse M, Thompson L, Okazawa H, Choi Y, Nishijima K, Koshiba M, Yokoyama M, Goldsack A, Martens K, Murdoch M, Quilain B, Suzuki Y, Vagins MR, Kuze M, Okajima Y, Tanaka M, Yoshida T, Ishitsuka M, Matsumoto R, Ohta K, Martin JF, Nantais CM, Tanaka HA, Towstego T, Hartz M, Konaka A, de Perio P, Chen S, Jamieson B, Walker J, Minamino Aet al., 2019, Sensitivity of super-kamiokande with gadolinium to low energy antineutrinos from pre-supernova emission, The Astrophysical Journal: an international review of astronomy and astronomical physics, Vol: 885, Pages: 1-14, ISSN: 0004-637X

Supernova detection is a major objective of the Super-Kamiokande (SK) experiment. In the next stage of SK (SK-Gd), gadolinium (Gd) sulfate will be added to the detector, which will improve the ability of the detector to identify neutrons. A core-collapse supernova (CCSN) will be preceded by an increasing flux of neutrinos and antineutrinos, from thermal and weak nuclear processes in the star, over a timescale of hours; some of which may be detected at SK-Gd. This could provide an early warning of an imminent CCSN, hours earlier than the detection of the neutrinos from core collapse. Electron antineutrino detection will rely on inverse beta decay events below the usual analysis energy threshold of SK, so Gd loading is vital to reduce backgrounds while maximizing detection efficiency. Assuming normal neutrino mass ordering, more than 200 events could be detected in the final 12 hr before core collapse for a 15–25 solar mass star at around 200 pc, which is representative of the nearest red supergiant to Earth, α-Ori (Betelgeuse). At a statistical false alarm rate of 1 per century, detection could be up to 10 hr before core collapse, and a pre-supernova star could be detected by SK-Gd up to 600 pc away. A pre-supernova alert could be provided to the astrophysics community following gadolinium loading.

Journal article

Abe K, Akutsu R, Ali A, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Ashida Y, Awataguchi Y, Azuma Y, Ban S, Barbi M, Barker GJ, Barr G, Barry C, Batkiewicz-Kwasniak M, Bench F, Berardi V, Berkman S, Berner RM, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bourguille B, Boyd SB, Brailsford D, Bravar A, Bronner C, Avanzini MB, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Coleman J, Collazuol G, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Drapier O, Duffy KE, Dumarchez J, Dunne P, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda Y, Gameil K, Giganti C, Gizzarelli F, Golan T, Gonin M, Hadley DR, Haegel L, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Van NTH, Hosomi F, Iacob F, Ichikawa AK, Ikeda M, Inoue T, Intonti RA, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Jamieson B, Jesus C, Jiang M, Johnson S, Jonsson P, Jung CK, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kim H, Kim J, King S, Kisiel J, Knight A, Knox A, Kobayashi T, Koch L, Koga T, Koller PP, Konaka A, Kormos LL, Koshio Y, Kowalik K, Kubo H, Kudenko Y, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Lasorak P, Laveder M, Lawe M, Licciardi M, Lindner T, Liptak ZJ, Litchfield RP, Li X, Longhin A, Lopez JP, Lou T, Ludovici L, Lu X, Lux T, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Martin JF, Martins P, Maruyama T, Matsubara T, Matveev V, Mavrokoridis K, Ma WY, Mazzucato E, McCarthy M, McCauley N, McFarland KS, McGrew C, Mefodiev A, Metelko C, Mezzetto M, Minamino A, Mineev O, Mine S, Miura M, Bueno LM, Moriyama S, Morrison J, Mueller TAet al., 2019, Search for heavy neutrinos with the T2K near detector ND280, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 100, ISSN: 1550-2368

This paper reports on the search for heavy neutrinos with masses in the range 140<MN<493  MeV/c2 using the off-axis near detector ND280 of the T2K experiment. These particles can be produced from kaon decays in the standard neutrino beam and then subsequently decay in ND280. The decay modes under consideration are N→ℓ±απ∓ and N→ℓ+αℓ−β(−)ν(α,β=e,μ). A search for such events has been made using the Time Projection Chambers of ND280, where the background has been reduced to less than two events in the current dataset in all channels. No excess has been observed in the signal region. A combined Bayesian statistical approach has been applied to extract upper limits on the mixing elements of heavy neutrinos to electron-, muon- and tau- flavored currents (U2e, U2μ, U2τ) as a function of the heavy neutrino mass, e.g., U2e<10−9 at 90% C.L. for a mass of 390  MeV/c2. These constraints are competitive with previous experiments.

Journal article

Abe K, Akutsu R, Ali A, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Ashida Y, Awataguchi Y, Azuma Y, Ban S, Barbi M, Barker GJ, Barr G, Barry C, Batkiewicz-Kwasniak M, Bench F, Berardi V, Berkman S, Berner RM, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bourguille B, Boyd SB, Brailsford D, Bravar A, Bronner C, Avanzini MB, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Coleman J, Collazuol G, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Drapier O, Duffy KE, Dumarchez J, Dunne P, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda Y, Gameil K, Giganti C, Gizzarelli F, Golan T, Gonin M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Hong Van NT, Hosomi F, Ichikawa AK, Ikeda M, Inoue T, Intonti RA, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Jamieson B, Jesus-Valls C, Jiang M, Johnson S, Jonsson P, Jung CK, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kim H, Kim J, King S, Kisiel J, Knight A, Knox A, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kowalik K, Kubo H, Kudenko Y, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Lasorak P, Laveder M, Lawe M, Licciardi M, Lindner T, Litchfield RP, Li X, Longhin A, Lopez JP, Lou T, Ludovici L, Lu X, Lux T, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Martin JF, Martins P, Maruyama T, Matsubara T, Matveev V, Mavrokoridis K, Ma WY, Mazzucato E, McCarthy M, McCauley N, McFarland KS, McGrew C, Mefodiev A, Metelko C, Mezzetto M, Minamino A, Mineev O, Mine S, Miura M, Moriyama S, Morrison J, Mueller TA, Murphy S, Nagai Y, Nakadaira T, Nakahatet al., 2019, Measurement of the muon neutrino charged-current cross sections on water, hydrocarbon and iron, and their ratios, with the T2K on-axis detectors, Progress of Theoretical and Experimental Physics, Vol: 2019, Pages: 1-30, ISSN: 0033-068X

We report a measurement of the flux-integrated νμ charged-current cross sections on water, hydrocarbon, and iron in the T2K on-axis neutrino beam with a mean neutrino energy of 1.5 GeV. The measured cross sections on water, hydrocarbon, and iron are σH2OCC=(0.840±0.010(stat.)+0.10−0.08(syst.))×10−38cm2/nucleon, σCHCC=(0.817±0.007(stat.)+0.11−0.08(syst.))×10−38cm2/nucleon, and σFeCC=(0.859±0.003(stat.)+0.12−0.10(syst.))×10−38cm2/nucleon, respectively, for a restricted phase space of induced muons: θμ<45∘ and pμ>0.4 GeV/c in the laboratory frame. The measured cross section ratios are σH2OCC/σCHCC=1.028±0.016(stat.)±0.053(syst.)⁠, σFeCC/σH2OCC=1.023±0.012(stat.)±0.058(syst.)⁠, and σFeCC/σCHCC=1.049±0.010(stat.)±0.043(syst.)⁠. These results, with an unprecedented precision for the measurements of neutrino cross sections on water in the studied energy region, show good agreement with the current neutrino interaction models used in the T2K oscillation analyses.

Journal article

Abe K, Akutsu R, Ali A, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Ashida Y, Awataguchi Y, Azuma Y, Ban S, Barbi M, Barker GJ, Barr G, Barry C, Batkiewicz-Kwasniak M, Bench F, Berardi V, Berkman S, Berner RM, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bourguille B, Boyd SB, Brailsford D, Bravar A, Bronner C, Avanzini MB, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Coleman J, Collazuol G, Coplowe D, Cudd A, Dabrowska A, Rosa GD, Dealtry T, Denner PF, Dennis SR, Densham C, Lodovico FD, Dokania N, Dolan S, Drapier O, Duffy KE, Dumarchez J, Dunne P, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda Y, Gameil K, Giganti C, Gizzarelli F, Golan T, Gonin M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Van NTH, Hosomi F, Ichikawa AK, Ikeda M, Inoue T, Intonti RA, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Jamieson B, Jesus C, Jiang M, Johnson S, Jonsson P, Jung CK, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kim H, Kim J, King S, Kisiel J, Knight A, Knox A, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kowalik K, Kubo H, Kudenko Y, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Lasorak P, Laveder M, Lawe M, Licciardi M, Lindner T, Litchfield RP, Li X, Longhin A, Lopez JP, Lou T, Ludovici L, Lu X, Lux T, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Martin JF, Martins P, Maruyama T, Matsubara T, Matveev V, Mavrokoridis K, Ma WY, Mazzucato E, McCarthy M, McCauley N, McFarland KS, McGrew C, Mefodiev A, Metelko C, Mezzetto M, Minamino A, Mineev O, Mine S, Miura M, Moriyama S, Morrison J, Mueller TA, Murphy S, Nagai Y, Nakadaira T, Nakahata M, Nakajimaet al., 2019, Search for neutral-current induced single photon production at the ND280 near detector in T2K, Journal of Physics G: Nuclear and Particle Physics, Vol: 46, ISSN: 0954-3899

Neutrino neutral-current (NC) induced single photon production is a sub-leading order process for accelerator-based neutrino beam experiments including T2K. It is, however, an important process to understand because it is a background for electron (anti)neutrino appearance oscillation experiments. Here, we performed the first search of this process below 1 GeV using the fine-grained detector at the T2K ND280 off-axis near detector. By reconstructing single photon kinematics from electron–positron pairs, we achieved 95% pure gamma ray sample from $5.738\times {10}^{20}$ protons-on-targets neutrino mode data. We do not find positive evidence of NC induced single photon production in this sample. We set the model-dependent upper limit on the cross-section for this process, at $0.114\times {10}^{-38}$ cm2 (90% C.L.) per nucleon, using the J-PARC off-axis neutrino beam with an average energy of $\left\langle {E}_{\nu }\right\rangle \sim 0.6$ GeV. This is the first limit on this process below 1 GeV which is important for current and future oscillation experiments looking for electron neutrino appearance oscillation signals.

Journal article

Jiang M, Abe K, Bronner C, Hayato Y, Ikeda M, Iyogi K, Kameda J, Kato Y, Kishimoto Y, Marti LL, Miura M, Moriyama S, Mochizuki T, Nakahata M, Nakajima Y, Nakano Y, Nakayama S, Okada T, Okamoto K, Orii A, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Takeda A, Takenaka A, Tanaka H, Yano T, Akutsu R, Kajita T, Nishimura Y, Okumura K, Wang R, Xia J, Labarga L, Fernandez P, Blaszczyk FDM, Kachulis C, Kearns E, Raaf JL, Stone JL, Sussman S, Berkman S, Bian J, Griskevich NJ, Kropp WR, Locke S, Mine S, Weatherly P, Smy MB, Sobel HW, Takhistov V, Ganezer KS, Hill J, Kim JY, Lim IT, Park RG, Bodur B, Scholberg K, Walter CW, Gonin M, Imber J, Mueller TA, Ishizuka T, Nakamura T, Jang JS, Choi K, Learned JG, Matsuno S, Litchfield RP, Uchida Y, Wascko MO, Calabria NF, Catanesi MG, Intonti RA, Radicioni E, De Rosa G, Ali A, Collazuol G, Iacob F, Ludovici L, Cao S, Friend M, Hasegawa T, Ishida T, Kobayashi T, Nakadaira T, Nakamura K, Oyama Y, Sakashita K, Sekiguchi T, Tsukamoto T, Abe KE, Hasegawa M, Isobe Y, Miyabe H, Sugimoto T, Suzuki AT, Takeuchi Y, Ashida Y, Hayashino T, Hirota S, Kikawa T, Mori M, Nakamura KE, Nakaya T, Wendell RA, Anthony LHV, McCauley N, Pritchard A, Tsui KM, Fukuda Y, Itow Y, Murrase M, Mijakowski P, Frankiewicz K, Jung CK, Li X, Palomino JL, Santucci G, Vilela C, Wilking MJ, Yanagisawa C, Fukuda D, Hagiwara K, Ishino H, Ito S, Koshio Y, Sakuda M, Takahira Y, Xu C, Kuno Y, Simpson C, Wark D, Di Lodovico F, Richards B, Molina Sedgwick S, Tacik R, Kim SB, Thiesse M, Thompson L, Okazawa H, Choi Y, Nishijima K, Koshiba M, Yokoyama M, Goldsack A, Martens K, Murdoch M, Quilain B, Suzuki Y, Vagins MR, Kuze M, Okajima Y, Yoshida T, Ishitsuka M, Martin JF, Nantais CM, Tanaka HA, Towstego T, Hartz M, Konaka A, de Perio P, Chen S, Wan L, Minamino Aet al., 2019, Atmospheric neutrino oscillation analysis with improved event reconstruction in Super-Kamiokande IV, Progress of Theoretical and Experimental Physics, Vol: 2019, ISSN: 2050-3911

A new event reconstruction algorithm based on a maximum likelihood method has been developed for Super-Kamiokande. Its improved kinematic and particle identification capabilities enable the analysis of atmospheric neutrino data in a detector volume 32% larger than previous analyses and increase the sensitivity to the neutrino mass hierarchy. Analysis of a 253.9 kton⋅year exposure of the Super-Kamiokande IV atmospheric neutrino data has yielded a weak preference for the normal hierarchy, disfavoring the inverted hierarchy at 74% assuming oscillations at the best fit of the analysis.

Journal article

Abe K, Akutsu R, Ali A, Andreopoulos C, Anthony L, Antonova M, Aoki S, Ariga A, Ashida Y, Awataguchi Y, Azuma Y, Ban S, Barbi M, Barker GJ, Barr G, Barry C, Batkiewicz-Kwasniak M, Bench F, Berardi V, Berkman S, Berner RM, Berns L, Bhadra S, Bienstock S, Blondel A, Bolognesi S, Bourguille B, Boyd SB, Brailsford D, Bravar A, Bronner C, Avanzini MB, Calcutt J, Campbell T, Cao S, Cartwright SL, Catanesi MG, Cervera A, Chappell A, Checchia C, Cherdack D, Chikuma N, Christodoulou G, Coleman J, Collazuol G, Coplowe D, Cudd A, Dabrowska A, De Rosa G, Dealtry T, Denner PF, Dennis SR, Densham C, Di Lodovico F, Dokania N, Dolan S, Drapier O, Duffy KE, Dumarchez J, Dunne P, Emery-Schrenk S, Ereditato A, Fernandez P, Feusels T, Finch AJ, Fiorentini GA, Fiorillo G, Francois C, Friend M, Fujii Y, Fujita R, Fukuda D, Fukuda Y, Gameil K, Giganti C, Gizzarelli F, Golan T, Gonin M, Hadley DR, Haigh JT, Hamacher-Baumann P, Hartz M, Hasegawa T, Hastings NC, Hayashino T, Hayato Y, Hiramoto A, Hogan M, Holeczek J, Van NTH, Hosomi F, Iacob F, Ichikawa AK, Ikeda M, Inoue T, Intonti RA, Ishida T, Ishii T, Ishitsuka M, Iwamoto K, Izmaylov A, Jamieson B, Jesus C, Jiang M, Johnson S, Jonsson P, Jung CK, Kabirnezhad M, Kaboth AC, Kajita T, Kakuno H, Kameda J, Karlen D, Katori T, Kato Y, Kearns E, Khabibullin M, Khotjantsev A, Kim H, Kim J, King S, Kisiel J, Knight A, Knox A, Kobayashi T, Koch L, Koga T, Konaka A, Kormos LL, Koshio Y, Kowalik K, Kubo H, Kudenko Y, Kurjata R, Kutter T, Kuze M, Labarga L, Lagoda J, Lamoureux M, Lasorak P, Laveder M, Lawe M, Licciardi M, Lindner T, Litchfield RP, Li X, Longhin A, Lopez JP, Lou T, Ludovici L, Lu X, Lux T, Magaletti L, Mahn K, Malek M, Manly S, Maret L, Marino AD, Martin JF, Martins P, Maruyama T, Matsubara T, Matveev V, Mavrokoridis K, Ma WY, Mazzucato E, McCarthy M, McCauley N, McFarland KS, McGrew C, Mefodiev A, Metelko C, Mezzetto M, Minamino A, Mineev O, Mine S, Miura M, Bueno LM, Moriyama S, Morrison J, Mueller TA, Murphy S, Nagai Y, Nakadaira Tet al., 2019, Search for light sterile neutrinos with the T2K far detector Super-Kamiokande at a baseline of 295 km, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 99, ISSN: 1550-2368

We perform a search for light sterile neutrinos using the data from the T2K far detector at a baseline of 295 km, with an exposure of 14.7(7.6)×1020 protons on target in neutrino (antineutrino) mode. A selection of neutral-current interaction samples is also used to enhance the sensitivity to sterile mixing. No evidence of sterile neutrino mixing in the 3+1 model was found from a simultaneous fit to the charged-current muon, electron and neutral-current neutrino samples. We set the most stringent limit on the sterile oscillation amplitude sin2θ24 for the sterile neutrino mass splitting Δm241<3×10−3  eV2/c4.

Journal article

Guerra ESP, Wilkinson C, Bhadra S, Bolognesi S, Calcutt J, de Perio P, Dolan S, Feusels T, Fiorentini GA, Hayato Y, Ieki K, Mahn K, McFarland KS, Paolone V, Pickering L, Tacik R, Tanaka HA, Terri R, Wascko MO, Wilking MJ, Wret C, Yu Met al., 2019, Using world pi(+/-)-nucleus scattering data to constrain an intranuclear cascade model, Physical Review D, Vol: 99, ISSN: 2470-0010

The NEUT intranuclear cascade model is described and fit to a large body of π± -nucleus scattering data. Methods are developed to deal with deficiencies in the available historical data, and robust uncertainty estimates are produced. The results are compared to a variety of simulation packages and the data. This work provides a method for tuning final state interaction models, which are of particular interest to neutrino experiments that operate in the few-GeV energy region, and provides results which can be used directly by the T2K and Super-Kamiokande Collaborations, for whom NEUT is the primary simulation package.

Journal article

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