Publications

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Dragicevic M, Del Valle AE, Fruhwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schofbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Muller D, Sahasransu AR, Tavernier S, Van Doninck W, Van Mulders P, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Grebenyuk A, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Wezenbeek L, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Vit M, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Alda Junior WL, Gallo Pereira MA, Ferreira Filho MB, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, De Souza SF, Figueiredo DM, Herrera CM, Amarilo KM, Mundim L, Nogima H, Teles PR, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang H, Zhao J, Agapitos A, An Yet al., 2022,

Identification of hadronic tau lepton decays using a deep neural network

, Journal of Instrumentation, Vol: 17, Pages: 1-53, ISSN: 1748-0221

A new algorithm is presented to discriminate reconstructed hadronic decays of tau leptons (τh) that originate from genuine tau leptons in the CMS detector against τh candidates that originate from quark or gluon jets, electrons, or muons. The algorithm inputs information from all reconstructed particles in the vicinity of a τh candidate and employs a deep neural network with convolutional layers to efficiently process the inputs. This algorithm leads to a significantly improved performance compared with the previously used one. For example, the efficiency for a genuine τh to pass the discriminator against jets increases by 10–30% for a given efficiency for quark and gluon jets. Furthermore, a more efficient τh reconstruction is introduced that incorporates additional hadronic decay modes. The superior performance of the new algorithm to discriminate against jets, electrons, and muons and the improved τh reconstruction method are validated with LHC proton-proton collision data at √s = 13 TeV.

Journal article

Aaij R, Abdelmotteleb ASW, Beteta CA, Gallego FJA, Ackernley T, Adeva B, Adinolfi M, Afsharnia H, Agapopoulou C, Aidala CA, Aiola S, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Aliouche Z, Alkhazov G, Cartelle PA, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andreianov A, Andreotti M, Archilli F, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Baldini W, Leite JB, Barbetti M, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Basels JM, Bashir S, Bassi G, Batsukh B, Battig A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga I, Beiter A, Belavin V, Belin S, Bellee V, Belous K, Belov I, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Berninghoff D, Bernstein HC, Bertella C, Bertolin A, Betancourt C, Betti F, Bezshyiko I, Bhasin S, Bhom J, Bian L, Bieker MS, Bifani S, Billoir P, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Boelhauve JA, Boente Garcia O, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Borsuk JT, Bouchiba SA, Bowcock TJ, Boyer A, Bozzi C, Bradley MJ, Braun S, Brea Rodriguez A, Brodzicka J, Gonzalo AB, Brundu D, Buonaura A, Buonincontri L, Burke AT, Burr C, Bursche A, Butkevich A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calefice L, Diaz LC, Cali S, Calladine R, Calvi M, Calvo Gomez M, Magalhaes PC, Campana P, Quezada AFC, Capelli S, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carli I, Carniti P, Carus L, Akiba KC, Casais Vidal A, Casse G, Cattaneo M, Cavallero G, Celani S, Cerasoli J, Cervenkov D, Chadwick AJ, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Barajas CAC, Chefdeville M, Chen C, Chen S, Chernov A, Chobanova V, Cholak S, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cicala MF, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff H, Closier J, Cobbledick JL, Coco V, Coelhet al., 2022,

Observation of an exotic narrow doubly charmed tetraquark

, NATURE PHYSICS, Vol: 18, Pages: 751-+, ISSN: 1745-2473

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Citations: 61

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Del Valle AE, Fruhwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schofbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Bols ES, D'Hondt J, De Moor A, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Muller D, Sahasransu AR, Tavernier S, Van Doninck W, Vannerom D, Stylianou N, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Paredes S, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Gao X, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Rendon C, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Wezenbeek L, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Teles PR, Alda Junior WL, Gallo Pereira MA, Ferreira Filho MB, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, Sousa VDS, De Souza SF, Herrera CM, Amarilo KM, Mundim L, Nogima H, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wanget al., 2022,

Search for resonant production of strongly coupled dark matter in proton-proton collisions at 13 TeV

, The Journal of High Energy Physics, Vol: 2022, Pages: 1-51, ISSN: 1029-8479

The first collider search for dark matter arising from a strongly coupled hidden sector is presented and uses a data sample corresponding to 138 fb−1, collected with the CMS detector at the CERN LHC, at s√ = 13 TeV. The hidden sector is hypothesized to couple to the standard model (SM) via a heavy leptophobic Z′ mediator produced as a resonance in proton-proton collisions. The mediator decay results in two “semivisible” jets, containing both visible matter and invisible dark matter. The final state therefore includes moderate missing energy aligned with one of the jets, a signature ignored by most dark matter searches. No structure in the dijet transverse mass spectra compatible with the signal is observed. Assuming the Z′ boson has a universal coupling of 0.25 to the SM quarks, an inclusive search, relevant to any model that exhibits this kinematic behavior, excludes mediator masses of 1.5–4.0 TeV at 95% confidence level, depending on the other signal model parameters. To enhance the sensitivity of the search for this particular class of hidden sector models, a boosted decision tree (BDT) is trained using jet substructure variables to distinguish between semivisible jets and SM jets from background processes. When the BDT is employed to identify each jet in the dijet system as semivisible, the mediator mass exclusion increases to 5.1 TeV, for wider ranges of the other signal model parameters. These limits exclude a wide range of strongly coupled hidden sector models for the first time.

Journal article

Tumasyan A, Adam W, Bergauer T, Dragicevic M, Erö J, Escalante Del Valle A, Frühwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Pitters FM, Rad N, Schieck J, Schöfbeck R, Spanring M, Templ S, Waltenberger W, Wulz C-E, Zarucki M, Chekhovsky V, Litomin A, Makarenko V, Suarez Gonzalez J, Darwish MR, De Wolf EA, Di Croce D, Janssen X, Kello T, Lelek A, Pieters M, Rejeb Sfar H, Van Haevermaet H, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, Chhibra SS, DHondt J, De Clercq J, Lontkovskyi D, Lowette S, Marchesini I, Moortgat S, Morton A, Python Q, Tavernier S, Van Doninck W, Van Mulders P, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Dorney B, Favart L, Grebenyuk A, Kalsi AK, Makarenko I, Moureaux L, Pétré L, Popov A, Postiau N, Starling E, Thomas L, Vander Velde C, Vanlaer P, Vannerom D, Wezenbeek L, Cornelis T, Dobur D, Gruchala M, Khvastunov I, Niedziela M, Roskas C, Skovpen K, Tytgat M, Verbeke W, Vermassen B, Vit M, Bruno G, Bury F, Caputo C, David P, Delaere C, Delcourt M, Donertas IS, Giammanco A, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Vischia P, Wertz S, Wuyckens S, Alves GA, Hensel C, Moraes A, Aldá Júnior WL, Belchior Batista Das Chagas E, Brandao Malbouisson H, Carvalho W, Chinellato J, Coelho E, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Martins J, Matos Figueiredo D, Medina Jaime M, Mora Herrera C, Mundim L, Nogima H, Rebello Teles P, Sanchez Rosas LJ, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Vilela Pereira A, Bernardes CA, Calligaris L, Tomei TRFP, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Fang W, Guo Q, Wang H, Yuan L, Ahmad M, Bauer G, Hu Z, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Javaid T, Kapoor A, Leggat D, Liao H, Liu Z-A, Sharma R, Spiezia A, Tao Jet al., 2022,

First search for exclusive diphoton production at high mass with tagged protons in proton-proton collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:mi>s</mml:mi></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>13</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:mrow></mml:math>

, Physical Review Letters, Vol: 129, ISSN: 0031-9007

A search for exclusive two-photon production via photon exchange in proton-proton collisions, pp→pγγp with intact protons, is presented. The data correspond to an integrated luminosity of 9.4 fb−1 collected in 2016 using the CMS and TOTEM detectors at a center-of-mass energy of 13 TeV at the LHC. Events are selected with a diphoton invariant mass above 350 GeV and with both protons intact in the final state, to reduce backgrounds from strong interactions. The events of interest are those where the invariant mass and rapidity calculated from the momentum losses of the forward-moving protons match the mass and rapidity of the central, two-photon system. No events are found that satisfy this condition. Interpreting this result in an effective dimension-8 extension of the standard model, the first limits are set on the two anomalous four-photon coupling parameters. If the other parameter is constrained to its standard model value, the limits at 95% confidence level are |ζ1|<2.9×10−13 GeV−4 and |ζ2|<6.0×10−13 GeV−4.

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Dragicevic M, Del Valle AE, Frühwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schöfbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, D'Hondt J, Delcourt M, Faham HE, Lowette S, Moortgat S, Morton A, Müller D, Sahasransu AR, Tavernier S, Van Doninck W, Van Mulders P, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Grebenyuk A, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Pétré L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Wezenbeek L, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Vit M, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Júnior WLA, Pereira MAG, Filho MBF, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, De Souza SF, Figueiredo DM, Herrera CM, Amarilo KM, Mundim L, Nogima H, Teles PR, Santoro A, Amaral SMSD, Sznajder A, Thiel M, De Araujo FTDS, Pereira AV, Bernardes CA, Calligaris L, Tomei TRFP, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang H, Zhao J, Agapitos A, An Y, Ban Y, Chen C, Levin A, Li Q, Lyu Xet al., 2022,

Observation of the B_{c}^{+} meson in Pb-Pb and pp collisions at sqrt[s_{NN}]=5.02 TeV and measurement of its nuclear modification factor

, Physical Review Letters, Vol: 128, ISSN: 0031-9007

The B_{c}^{+} meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to study the production of the B_{c}^{+} meson in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a center-of-mass energy per nucleon pair of sqrt[s_{NN}]=5.02 TeV, via the B_{c}^{+}→(J/ψ→μ^{+}μ^{-})μ^{+}ν_{μ} decay. The B_{c}^{+} nuclear modification factor, derived from the Pb-Pb-to-pp ratio of production cross sections, is measured in two bins of the trimuon transverse momentum and of the Pb-Pb collision centrality. The B_{c}^{+} meson is shown to be less suppressed than quarkonia and most of the open heavy-flavor mesons, suggesting that effects of the hot and dense nuclear matter created in heavy ion collisions contribute to its production. This measurement sets forth a promising new probe of the interplay of suppression and enhancement mechanisms in the production of heavy-flavor mesons in the quark-gluon plasma.

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Dragicevic M, Del Valle AE, Frühwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schöfbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, DHondt J, Delcourt M, Faham HE, Lowette S, Moortgat S, Morton A, Müller D, Sahasransu AR, Tavernier S, Van Doninck W, Van Mulders P, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Grebenyuk A, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Pétré L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Wezenbeek L, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Vit M, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Júnior WLA, Pereira MAG, Filho MBF, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, De Souza SF, Figueiredo DM, Herrera CM, Amarilo KM, Mundim L, Nogima H, Teles PR, Santoro A, Amaral SMSD, Sznajder A, Thiel M, De Araujo FTDS, Pereira AV, Bernardes CA, Calligaris L, Tomei TRFP, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang H, Zhao J, Agapitos A, An Y, Ban Y, Chen C, Levin A, Li Q, Lyu Xet al., 2022,

Observation of the <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mi>c</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msubsup></mml:mrow></mml:math> Meson in Pb-Pb and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>p</mml:mi><mml:mi>p</mml:mi></mml:math> Collisions at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msqrt><mml:mrow><mml:msub><mml:mrow><mml:mi>s</mml:mi></mml:mrow><mml:mrow><mml:mi>N</mml:mi><mml:mi>N</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:msqrt><mml:mo>=</mml:mo><mml:mn>5.02</mml:mn><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>TeV</mml:mi></mml:mrow></mml:math> and Measurement of its Nuclear Modification Factor

, Physical Review Letters, Vol: 128, ISSN: 0031-9007

The B+c meson is observed for the first time in heavy ion collisions. Data from the CMS detector are used to study the production of the B+c meson in lead-lead (Pb-Pb) and proton-proton (pp) collisions at a center-of-mass energy per nucleon pair of √sNN=5.02 TeV, via the B+c→(J/ψ→μ+μ−)μ+νμ decay. The B+c nuclear modification factor, derived from the Pb-Pb–to–pp ratio of production cross sections, is measured in two bins of the trimuon transverse momentum and of the Pb-Pb collision centrality. The B+c meson is shown to be less suppressed than quarkonia and most of the open heavy-flavor mesons, suggesting that effects of the hot and dense nuclear matter created in heavy ion collisions contribute to its production. This measurement sets forth a promising new probe of the interplay of suppression and enhancement mechanisms in the production of heavy-flavor mesons in the quark-gluon plasma.

Journal article

Aaij R, Abdelmotteleb ASW, Beteta CA, Gallego FJA, Ackernley T, Adeva B, Adinolfi M, Afsharnia H, Agapopoulou C, Aidala CA, Aiola S, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Aliouche Z, Alkhazov G, Cartelle PA, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andreianov A, Andreotti M, Archilli F, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Baldini W, Leite JB, Barbetti M, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Basels JM, Bashir S, Bassi G, Batsukh B, Battig A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga I, Beiter A, Belavin V, Belin S, Bellee V, Belous K, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Berninghoff D, Bernstein HC, Bertella C, Bertolin A, Betancourt C, Betti F, Bezshyiko I, Bhasin S, Bhom J, Bian L, Bieker MS, Bifani S, Billoir P, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Boelhauve JA, Garcia OB, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Borsuk JT, Bouchiba SA, Bowcock TJ, Boyer A, Bozzi C, Bradley MJ, Braun S, Brea Rodriguez A, Brodzicka J, Gonzalo AB, Brundu D, Buonaura A, Buonincontri L, Burke AT, Burr C, Bursche A, Butkevich A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calefice L, Diaz LC, Cali S, Calladine R, Calvi M, Calvo Gomez M, Magalhaes PC, Campana P, Quezada AFC, Capelli S, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carli I, Carniti P, Carus L, Akiba KC, Casais Vidal A, Casse G, Cattaneo M, Cavallero G, Celani S, Cerasoli J, Cervenkov D, Chadwick AJ, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Barajas CAC, Chefdeville M, Chen C, Chen S, Chernov A, Chobanova V, Cholak S, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cicala MF, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff H, Closier J, Cobbledick JL, Coco Vet al., 2022,

Study of the doubly charmed tetraquark Tcc+

, NATURE COMMUNICATIONS, Vol: 13

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Citations: 42

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Dragicevic M, Del Valle AE, Fruehwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schoefbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, D'Hondt J, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Mueller D, Sahasransu AR, Tavernier S, Van Doninck W, Van Mulders P, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Grebenyuk A, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Van-der Velde C, Vanlaer P, Wezenbeek L, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Vit M, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Alda Junior WL, Alves Gallo Pereira M, Barroso Ferreira Filho M, Brandao Malbouisson H, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Matos Figueiredo D, Mora Herrera C, Mota Amarilo K, Mundim L, Nogima H, Rebello Teles P, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Vilela Pereira A, Bernardes CA, Calligaris L, Tomei TRFP, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Taet al., 2022,

Search for charged-lepton flavor violation in top quark production and decay in pp collisions at root s=13 TeV

, The Journal of High Energy Physics, Vol: 2022, Pages: 1-43, ISSN: 1029-8479

Results are presented from a search for charged-lepton flavor violating (CLFV) interactions in top quark production and decay in pp collisions at a center-of-mass energy of 13 TeV. The events are required to contain one oppositely charged electron-muon pair in the final state, along with at least one jet identified as originating from a bottom quark. The data correspond to an integrated luminosity of 138 fb−1, collected by the CMS experiment at the LHC. This analysis includes both the production (q → eμt) and decay (t → eμq) modes of the top quark through CLFV interactions, with q referring to a u or c quark. These interactions are parametrized using an effective field theory approach. With no significant excess over the standard model expectation, the results are interpreted in terms of vector-, scalar-, and tensor-like CLFV four-fermion effective interactions. Finally, observed exclusion limits are set at 95% confidence levels on the respective branching fractions of a top quark to an eμ pair and an up (charm) quark of 0.13 × 10−6 (1.31 × 10−6), 0.07 × 10−6 (0.89 × 10−6), and 0.25 × 10−6 (2.59 × 10−6) for vector, scalar, and tensor CLFV interactions, respectively.

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Del Valle AE, Fruhwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schofbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, D'Hondt J, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Muller D, Sahasransu AR, Tavernier S, Van Doninck W, Vannerom D, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Paredes S, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Rendon C, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Wezenbeek L, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Teles PR, Alda Junior WL, Gallo Pereira MA, Ferreira Filho MB, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, Sousa VDS, De Souza SF, Herrera CM, Amarilo KM, Mundim L, Nogima H, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang H, Zhao Jet al., 2022,

Inclusive nonresonant multilepton probes of new phenomena at root s=13 TeV

, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 105, ISSN: 1550-2368

An inclusive search for nonresonant signatures of beyond the standard model (SM) phenomena in events with three or more charged leptons, including hadronically decaying τ leptons, is presented. The analysis is based on a data sample corresponding to an integrated luminosity of 138 fb−1 of proton-proton collisions at √s=13 TeV, collected by the CMS experiment at the LHC in 2016–2018. Events are categorized based on the lepton and b-tagged jet multiplicities and various kinematic variables. Three scenarios of physics beyond the SM are probed, and signal-specific boosted decision trees are used for enhancing sensitivity. No significant deviations from the background expectations are observed. Lower limits are set at 95% confidence level on the mass of type-III seesaw heavy fermions in the range 845–1065 GeV for various decay branching fraction combinations to SM leptons. Doublet and singlet vectorlike τ lepton extensions of the SM are excluded for masses below 1045 GeV and in the mass range 125–150 GeV, respectively. Scalar leptoquarks decaying exclusively to a top quark and a lepton are excluded below 1.12–1.42 TeV, depending on the lepton flavor. For the type-III seesaw as well as the vectorlike doublet model, these constraints are the most stringent to date. For the vectorlike singlet model, these are the first constraints from the LHC experiments. Detailed results are also presented to facilitate alternative theoretical interpretations.

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Del Valle AE, Frühwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schöfbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, DHondt J, Delcourt M, Faham HE, Lowette S, Moortgat S, Morton A, Müller D, Sahasransu AR, Tavernier S, Van Doninck W, Vannerom D, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Paredes S, Pétré L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Rendón C, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Wezenbeek L, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Teles PR, Júnior WLA, Pereira MAG, Filho MBF, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, Sousa VDS, De Souza SF, Herrera CM, Amarilo KM, Mundim L, Nogima H, Santoro A, Amaral SMSD, Sznajder A, Thiel M, De Araujo FTDS, Pereira AV, Bernardes CA, Calligaris L, Tomei TRFP, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang H, Zhao J, Agapitos A, An Y, Ban Y, Chen C, Levin A, Li Qet al., 2022,

Inclusive nonresonant multilepton probes of new phenomena at √s=13 TeV

, Physical Review D, Vol: 105, Pages: 1-52, ISSN: 2470-0010

An inclusive search for nonresonant signatures of beyond the standard model (SM) phenomena in events with three or more charged leptons, including hadronically decaying τ leptons, is presented. The analysis is based on a data sample corresponding to an integrated luminosity of 138 fb−1 of proton-proton collisions at √s=13 TeV, collected by the CMS experiment at the LHC in 2016–2018. Events are categorized based on the lepton and b-tagged jet multiplicities and various kinematic variables. Three scenarios of physics beyond the SM are probed, and signal-specific boosted decision trees are used for enhancing sensitivity. No significant deviations from the background expectations are observed. Lower limits are set at 95% confidence level on the mass of type-III seesaw heavy fermions in the range 845–1065 GeV for various decay branching fraction combinations to SM leptons. Doublet and singlet vectorlike τ lepton extensions of the SM are excluded for masses below 1045 GeV and in the mass range 125–150 GeV, respectively. Scalar leptoquarks decaying exclusively to a top quark and a lepton are excluded below 1.12–1.42 TeV, depending on the lepton flavor. For the type-III seesaw as well as the vectorlike doublet model, these constraints are the most stringent to date. For the vectorlike singlet model, these are the first constraints from the LHC experiments. Detailed results are also presented to facilitate alternative theoretical interpretations.

Journal article

Tumasyan A, Adam W, Ambrogi F, Bergauer T, Dragicevic M, Ero J, Del Valle AE, Fruhwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Madlener T, Mikulec I, Pitters FM, Rad N, Schieck J, Schofbeck R, Spanring M, Templ S, Waltenberger W, Wulz C-E, Zarucki M, Chekhovsky V, Litomin A, Makarenko V, Gonzalez JS, Darwish MR, De Wolf EA, Di Croce D, Janssen X, Kello T, Lelek A, Pieters M, Sfar HR, Van Haevermaet H, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, Chhibra SS, De Clercq J, Lontkovskyi D, Lowette S, Marchesini I, Moortgat S, Morton A, Python Q, Tavernier S, Van Doninck W, Van Mulders P, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Dorney B, Favart L, Grebenyuk A, Kalsi AK, Makarenko I, Moureaux L, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vander Velde C, Vanlaer P, Vannerom D, Wezenbeek L, Cornelis T, Dobur D, Gruchala M, Khvastunov I, Niedziela M, Roskas C, Skovpen K, Tytgat M, Verbeke W, Vermassen B, Vit M, Bruno G, Bury F, Caputo C, David P, Delaere C, Delcourt M, Donertas IS, Giammanco A, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Vischia P, Wuyckens S, Zobec J, Alves GA, Hensel C, Moraes A, Alda Junior WL, Batista Das Chagas EB, Malbouisson HB, Carvalho W, Chinellato J, Coelho E, Da Costa EM, Da Silveira GG, Damiao DDJ, De Souza SF, Martins J, Figueiredo DM, Jaime MM, De Almeida MM, Herrera CM, Mundim L, Nogima H, Teles PR, Sanchez Rosas LJ, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Tonelli Manganote EJ, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Atanasov I, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Bonchev M, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Fang W, Guo Q, Wang H, Yuan L, Ahmad M, Hu Z, Wang Y, Chapon E, Chen GM, Chen HS, Chen M, Kapoor A, Leggat D, Liao H, Liu Z, Sharma R, Spiezia A, Tao J, Thomas-wilsker J, Wanet al., 2022,

Observation of B-s(0) mesons and measurement of the B-s(0)/B+ yield ratio in PbPb collisions at root S-NN=5.02 TeV

, Modern Physics Letters B, Vol: 829, Pages: 1-25, ISSN: 0217-9849

The B0s and B+ production yields are measured in PbPb collisions at a center-of-mass energy pernucleon pair of 5.02 TeV. The data sample, collected with the CMS detector at the LHC, correspondsto an integrated luminosity of 1.7 nb−1. The mesons are reconstructed in the exclusive decay channelsB0s → J/ψ(μ+μ−)φ(K+K−) and B+ → J/ψ(μ+μ−)K+, in the transverse momentum range 7–50 GeV/cand absolute rapidity 0–2.4. The B0s meson is observed with a statistical significance in excess of fivestandard deviations for the first time in nucleus-nucleus collisions. The measurements are performed asfunctions of the transverse momentum of the B mesons and of the PbPb collision centrality. The ratioof production yields of B0s and B+ is measured and compared to theoretical models that include quarkrecombination effects.

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Dragicevic M, Del Valle AE, Fruhwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schofbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, D'Hondt J, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Muller D, Sahasransu AR, Tavernier S, Van Doninck W, Van Mulders P, Stylianou N, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Grebenyuk A, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Wezenbeek L, Gao X, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Vit M, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Alda Junior WL, Gallo Pereira MA, Ferreira Filho MB, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, De Souza SF, Figueiredo DM, Herrera CM, Amarilo KM, Mundim L, Nogima H, Teles PR, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-wilsker J, Wang J, Zhanet al., 2022,

Analysis of the CP structure of the Yukawa coupling between the Higgs boson and tau leptons in proton-proton collisions at root s=13 TeV

, The Journal of High Energy Physics, Vol: 2022, Pages: 1-67, ISSN: 1029-8479

The first measurement of the CP structure of the Yukawa coupling between the Higgs boson and τ leptons is presented. The measurement is based on data collected in proton-proton collisions at s√ = 13 TeV by the CMS detector at the LHC, corresponding to an integrated luminosity of 137 fb−1. The analysis uses the angular correlation between the decay planes of τ leptons produced in Higgs boson decays. The effective mixing angle between CP-even and CP-odd τ Yukawa couplings is found to be −1 ± 19°, compared to an expected value of 0 ± 21° at the 68.3% confidence level. The data disfavour the pure CP-odd scenario at 3.0 standard deviations. The results are compatible with predictions for the standard model Higgs boson.

Journal article

Aaij R, Abdelmotteleb ASW, Beteta CA, Abudinen F, Ackernley T, Adeva B, Adinolfi M, Afsharnia H, Agapopoulou C, Aidala CA, Aiola S, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Aliouche Z, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson N, Andreianov A, Andreotti M, Archilli F, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Baldini W, Leite JB, Barbetti M, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Basels JM, Bashir S, Bassi G, Batsukh B, Battig A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga I, Beiter A, Belavin V, Belin S, Bellee V, Belous K, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Berninghoff D, Bernstein HC, Bertella C, Bertolin A, Betancourt C, Betti F, Bezshyiko I, Bhasin S, Bhom J, Bian L, Bieker MS, Biesuz N, Bifani S, Billoir P, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Boelhauve JA, Boente Garcia O, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Borsuk JT, Bouchiba SA, Bowcock TJ, Boyer A, Bozzi C, Bradley MJ, Braun S, Brea Rodriguez A, Brodzicka J, Gonzalo AB, Brundu D, Buonaura A, Buonincontri L, Burke AT, Burr C, Bursche A, Butkevich A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calefice L, Cali S, Calladine R, Calvi M, Calvo Gomez M, Magalhaes PC, Campana P, Quezada AFC, Capelli S, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carli I, Carniti P, Carus L, Akiba KC, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Celani S, Cerasoli J, Cervenkov D, Chadwick AJ, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Barajas CAC, Chefdeville M, Chen C, Chen S, Chernov A, Chobanova V, Cholak S, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cicala MF, Cid Vidal X, Ciezarek G, Clarke PEL, Cleet al., 2022,

Angular Analysis of D0 → x plus x-μ plus μ- and D0 → K plus K-μ plus μ- Decays and Search for CP Violation

, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007

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Citations: 3

Journal article

Abe K, Bronner C, Hayato Y, Ikeda M, Imaizumi S, Ito H, Kameda J, Kataoka Y, Miura M, Moriyama S, Nagao Y, Nakahata M, Nakajima Y, Nakayama S, Okada T, Okamoto K, Orii A, Pronost G, Sekiya H, Shiozawa M, Sonoda Y, Suzuki Y, Takeda A, Takemoto Y, Takenaka A, Tanaka H, Yano T, Akutsu R, Han S, Kajita T, Okumura K, Tashiro T, Wang R, Xia J, Bravo-Berguño D, Labarga L, Marti L, Zaldivar B, Blaszczyk FDM, Kearns E, Raaf JL, Stone JL, Wan L, Wester T, Pointon BW, Bian J, Griskevich NJ, Kropp WR, Locke S, Mine S, Smy MB, Sobel HW, Takhistov V, Weatherly P, Hill J, Kim JY, Lim IT, Park RG, Bodur B, Scholberg K, Walter CW, Bernard L, Coffani A, Drapier O, Hedri SE, Giampaolo A, Gonin M, Mueller TA, Paganini P, Quilain B, Ishizuka T, Nakamura T, Jang JS, Learned JG, Anthony LHV, Sztuc AA, Uchida Y, Berardi V, Catanesi MG, Radicioni E, Calabria NF, Machado LN, De Rosa G, Collazuol G, Iacob F, Lamoureux M, Ospina N, Ludovici L, Nishimura Y, Cao S, Friend M, Hasegawa T, Ishida T, Jakkapu M, Kobayashi T, Matsubara T, Nakadaira T, Nakamura K, Oyama Y, Sakashita Ket al., 2022,

Search for solar electron anti-neutrinos due to spin-flavor precession in the Sun with Super-Kamiokande-IV

, Astroparticle Physics, Vol: 139, ISSN: 0927-6505

Due to a very low production rate of electron anti-neutrinos (ν̄e) via nuclear fusion in the Sun, a flux of solar ν̄e is unexpected. An appearance of ν̄e in solar neutrino flux opens a new window for the new physics beyond the standard model. In particular, a spin-flavor precession process is expected to convert an electron neutrino into an electron anti-neutrino (νe→ν̄e) when neutrino has a finite magnetic moment. In this work, we have searched for solar ν̄e in the Super-Kamiokande experiment, using neutron tagging to identify their inverse beta decay signature. We identified 78 ν̄e candidates for neutrino energies of 9.3 to 17.3 MeV in 2970.1 live days with a fiducial volume of 22.5 kiloton water (183.0 kton⋅year exposure). The energy spectrum has been consistent with background predictions and we thus derived a 90% confidence level upper limit of 4.7×10−4 on the νe→ν̄e conversion probability in the Sun. We used this result to evaluate the sensitivity of future experiments, notably the Super-Kamiokande Gadolinium (SK-Gd) upgrade.

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Citations: 5

Journal article

Adam W, Bergauer T, Damanakis K, Dragicevic M, Fruhwirth R, Steininger H, Beaumont W, Di Croce D, Janssen X, Kello T, Lelek A, Van Mechelen P, Van Putte S, Van Remortel N, Delcourt M, De Moor A, Lowette S, Morton A, Muller D, Sahasransu AR, Bols ES, Vannerom D, Allard Y, Clerbaux B, Dansana S, De Lentdecker G, Deng W, Favart L, Hohov D, Khalilzadeh A, Lee K, Mahdavikhorrami M, Makarenko I, Paredes S, Postiau N, Robert F, Thomas L, Vanden Bemden M, Vanlaer P, Wang H, Yang Y, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Deblaere A, Delaere C, Donertas IS, Giammanco A, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Szilasi N, Taliercio A, Teklishyn M, Vischia P, Wertz S, Chitroda B, Majumder D, Mishra S, Starodumov A, Susa T, Eerola P, Brucken E, Lampen T, Martikainen L, Tuominen E, Karadzhinova-Ferrer A, Luukka P, Petrow H, Tuuva T, Agram J-L, Andrea J, Apparu D, Bloch D, Bonnin C, Brom J-M, Chabert E, Charles L, Collard C, Dangelser E, Goerlach U, Grimault C, Gross L, Haas C, Krauth M, Nibigira E, Ollivier-Henry N, Jimenez ES, Asilar E, Baulieu G, Boudoul G, Caponetto L, Chanon N, Contardo D, Dene P, Dupasquier T, Galbit G, Lumb N, Mirabito L, Nodari B, Vander Donckt M, Viret S, Botta V, Feld L, Karpinski W, Klein K, Lipinski M, Louis D, Meuser D, Pauls A, Pierschel G, Rauch M, Roewert N, Schulz J, Teroerde M, Wlochal M, Dziwok C, Fluegge G, Pooth O, Stahl A, Ziemons T, Bhattacharya S, Blekman F, Campbell A, Cheng C, Rodriguez SC, Eckerlin G, Eckstein D, Gallo E, Guthoff M, Kleinwort C, Mankel R, Maser H, Muhl C, Mussgiller A, Nurnberg A, Otarid Y, Reichelt O, Savitskyi M, Schutze P, Stever R, Tonon N, Velyka A, Barroso AV, Walsh R, Wang Q, Zuber A, Antonello M, Biskop H, Buhmann P, Connor P, Feindt F, Froehlich A, Garutti E, Hajheidari M, Haller J, Hinzmann A, Jabusch H, Kasieczka G, Klanner R, Kutzner V, Lange J, Lange T, Martens S, Mrowietz M, Nissan Y, Pena K, Schleper P, Schwandt J, Steinbruck G, Tews A, Wellhausen J, Zoi I, Abbas M, Ardila L, Balzeret al., 2022,

Beam test performance of a prototype module with Short Strip ASICs for the CMS HL-LHC tracker upgrade

, JOURNAL OF INSTRUMENTATION, Vol: 17, ISSN: 1748-0221

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Del Valle AE, Fruhwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schofbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, D'Hondt J, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Muller D, Sahasransu AR, Tavernier S, Van Doninck W, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Grebenyuk A, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Wezenbeek L, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Alda Junior WL, Gallo Pereira MA, Ferreira Filho MB, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, De Souza SF, Herrera CM, Amarilo KM, Mundim L, Nogima H, Teles PR, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang H, Zhao J, Agapitos A, An Y, Ban Y, Chen Cet al., 2022,

Measurement of the production cross section for Z plus b jets in proton-proton collisions at ?s=13 TeV

, Physical Review D: Particles, Fields, Gravitation and Cosmology, Vol: 105, ISSN: 1550-2368

The measurement of the cross section for the production of a Z boson, decaying to dielectrons or dimuons, in association with at least one bottom quark jet is performed with proton-proton collision data at √s=13 TeV. The data sample corresponds to an integrated luminosity of 137 fb−1, collected by the CMS experiment at the LHC during 2016–2018. The integrated cross sections for Z+≥1 b jet and Z+≥2 b jets are reported for the electron, muon, and combined channels. The fiducial cross sections in the combined channel are 6.52±0.04(stat)±0.40(syst)±0.14(theo) pb for Z+≥1 b jet and 0.65±0.03(stat)±0.07(syst)±0.02(theo) pb for Z+≥2 b jets. The differential cross section distributions are measured as functions of various kinematic observables that are useful for precision tests of perturbative quantum chromodynamics predictions. The ratios of integrated and differential cross sections for Z+≥2b jets and Z+≥1 b jet processes are also determined. The value of the integrated cross section ratio measured in the combined channel is 0.100±0.005(stat)±0.007(syst)±0.003(theo). All measurements are compared with predictions from various event generators.

Working paper

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Del Valle AE, Fruhwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schofbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Bols ES, D'Hondt J, De Moor A, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Muller D, Sahasransu AR, Tavernier S, Van Doninck W, Vannerom D, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Paredes S, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Rendon C, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Wezenbeek L, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Rebello Teles P, Alda Junior WL, Gallo Pereira MA, Ferreira Filho MB, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, Sousa VDS, De Souza SF, Herrera CM, Amarilo KM, Mundim L, Nogima H, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang H Zet al., 2022,

Observation of B0→ψ(2S)KS0π+π- and Bs0→ψ(2S)KS0 decays

, Publisher: SPRINGER

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Valle AED, Frühwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schöfbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Mechelen PV, Putte SV, Remortel NV, Bols ES, D'Hondt J, De Moor A, Delcourt M, Faham HE, Lowette S, Moortgat S, Morton A, Müller D, Sahasransu AR, Tavernier S, Doninck WV, Vannerom D, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Paredes S, Pétré L, Popov A, Postiau N, Starling E, Thomas L, Bemden MV, Velde CV, Vanlaer P, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Rendón C, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Wezenbeek L, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Teles PR, Júnior WLA, Pereira MAG, Filho MBF, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Sousa VDS, De Souza SF, Herrera CM, Amarilo KM, Mundim L, Nogima H, Santoro A, Amaral SMSD, Sznajder A, Thiel M, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Tomei TRFP, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang H, Zhao J, Agapitos A, An Y, Ban Y, Chen C, Levin A, Li Q, Lyu X, Mao Yet al., 2022,

Observation of B 0 → ψ (2S)K S 0 π + π - and B s 0 → ψ (2S)K S 0 decays

, Eur Phys J C Part Fields, Vol: 82, ISSN: 1434-6044

Using a data sample of s√=13TeV proton-proton collisions collected by the CMS experiment at the LHC in 2017 and 2018 with an integrated luminosity of 103~fb−1, the B0s→ψ(2S)K0S and B0→ψ(2S)K0Sπ+π− decays are observed with significances exceeding 5 standard deviations. The resulting branching fraction ratios, measured for the first time, correspond to B(B0s→ψ(2S)K0S)/B(B0→ψ(2S)K0S)=(3.33±0.69(stat)±0.11(syst)±0.34(fs/fd))×10−2 and B(B0→ψ(2S)K0Sπ+π−)/B(B0→ψ(2S)K0S)=0.480±0.013(stat)±0.032(syst), where the last uncertainty in the first ratio is related to the uncertainty in the ratio of production cross sections of B0s and B0 mesons, fs/fd.

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Escalante Del Valle A, Frühwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schöfbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Rejeb Sfar H, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, DHondt J, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Müller D, Sahasransu AR, Tavernier S, Van Doninck W, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Grebenyuk A, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Pétré L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Wezenbeek L, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Aldá Júnior WL, Alves Gallo Pereira M, Barroso Ferreira Filho M, Brandao Malbouisson H, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Mora Herrera C, Mota Amarilo K, Mundim L, Nogima H, Rebello Teles P, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Torres Da Silva De Araujo F, Vilela Pereira A, Bernardes CA, Calligaris L, Tomei TRFP, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilskeret al., 2022,

Measurement of the production cross section for Z+b jets in proton-proton collisions at √s=13 TeV

, Physical Review D, Vol: 105, Pages: 1-34, ISSN: 2470-0010

The measurement of the cross section for the production of a Z boson, decaying to dielectrons or dimuons, in association with at least one bottom quark jet is performed with proton-proton collision data at √s=13 TeV. The data sample corresponds to an integrated luminosity of 137 fb−1, collected by the CMS experiment at the LHC during 2016–2018. The integrated cross sections for Z+≥1 b jet and Z+≥2 b jets are reported for the electron, muon, and combined channels. The fiducial cross sections in the combined channel are 6.52±0.04(stat)±0.40(syst)±0.14(theo) pb for Z+≥1 b jet and 0.65±0.03(stat)±0.07(syst)±0.02(theo) pb for Z+≥2 b jets. The differential cross section distributions are measured as functions of various kinematic observables that are useful for precision tests of perturbative quantum chromodynamics predictions. The ratios of integrated and differential cross sections for Z+≥2b jets and Z+≥1 b jet processes are also determined. The value of the integrated cross section ratio measured in the combined channel is 0.100±0.005(stat)±0.007(syst)±0.003(theo). All measurements are compared with predictions from various event generators.

Journal article

Ahdida C, Akmete A, Albanese R, Alt J, Alexandrov A, Anokhina A, Aoki S, Arduini G, Atkin E, Azorskiy N, Back JJ, Bagulya A, Baaltasar Dos Santos F, Baranov A, Bardou F, Barker GJ, Battistin M, Bauche J, Bay A, Bayliss V, Berdnikov AY, Berdnikov YA, Betancourt C, Bezshyiko I, Bezshyyko O, Bick D, Bieschke S, Blanco A, Boehm J, Bogomilov M, Boiarska I, Bondarenko K, Bonivento WM, Borburgh J, Boyarsky A, Brenner R, Breton D, Brignoli A, Buescher V, Buonaura A, Buontempo S, Cadeddu S, Calviani M, Campanelli M, Casolino M, Charitonidis N, Chau P, Chauveau J, Chepurnov A, Chernyavskiy M, Choi K-Y, Chumakov A, Climescu M, Conaboy A, Congedo L, Cornelis K, Cristinziani M, Crupano A, Dallavalle GM, Datwyler A, D'Ambrosio N, D'Appollonio G, de Asmundis R, De Carvalho Saraiva J, De Lellis G, de Magistris M, De Roeck A, De Serio M, De Simone D, Dedenko L, Dergachev P, Di Crescenzo A, Di Giulio L, Dib C, Dijkstra H, Dmitrenko V, Dougherty LA, Dolmatov A, Donskov S, Drohan V, Dubreuil A, Durhan O, Ehlert M, Elikkaya E, Enik T, Etenko A, Fedin O, Fedotovs F, Ferrillo M, Ferro-Luzzi M, Filippov K, Fini RA, Fischer H, Fonte P, Franco C, Fraser M, Fresa R, Froeschl R, Fukuda T, Galati G, Gall J, Gatignon L, Gavrilov G, Gentile V, Goddard B, Golinka-Bezshyyko L, Golovatiuk A, Golovtsov V, Golubkov D, Golutvin A, Gorbounov P, Gorbunov D, Gorbunov S, Gorkavenko V, Gorshenkov M, Grachev V, Grandchamp AL, Graverini E, Grenard J-L, Grenier D, Grichine V, Gruzinskii N, Guler AM, Guz Y, Haefeli GJ, Hagner C, Hakobyan H, Harris IW, van Herwijnen E, Hessler C, Hollnagel A, Hosseini B, Hushchyn M, Iaselli G, Iuliano A, Jacobsson R, Jokovic D, Jonker M, Kadenko I, Kain V, Kaiser B, Kamiscioglu C, Karpenkov D, Kershaw K, Khabibullin M, Khalikov E, Khaustov G, Khoriauli G, Khotyantsev A, Kim YG, Kim V, Kitagawa N, Ko J-W, Kodama K, Kolesnikov A, Kolev DI, Kolosov V, Komatsu M, Kono A, Konovalova N, Kormannshaus S, Korol I, Korol'ko I, Korzenev A, Koukovini Platia E, Kovalenko S, Krasilnikova I Ket al., 2022,

The SHiP experiment at the proposed CERN SPS Beam Dump Facility

, EUROPEAN PHYSICAL JOURNAL C, Vol: 82, ISSN: 1434-6044

Author Web Link
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Citations: 9

Journal article

Aaij R, Abdelmotteleb ASW, Beteta CA, Abudinen F, Ackernley T, Adeva B, Adinolfi M, Afsharnia H, Agapopoulou C, Aidala CA, Aiola S, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Aliouche Z, Alkhazov G, Cartelle PA, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreianov A, Andreotti M, Ao D, Archilli F, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Baldini W, de Souza Leite JB, Barbetti M, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Basels JM, Bassi G, Batsukh B, Battig A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga I, Beiter A, Belavin V, Belin S, Bellee V, Belous K, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Berninghoff D, Bernstein HC, Bertella C, Bertolin A, Betancourt C, Betti F, Bezshyiko I, Bhasin S, Bhom J, Bian L, Bieker MS, Biesuz N, Bifani S, Billoir P, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Boelhauve JA, Boente Garcia O, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Borsuk JT, Bouchiba SA, Bowcock TJ, Boyer A, Bozzi C, Bradley MJ, Braun S, Brea Rodriguez A, Brodzicka J, Gonzalo AB, Brundu D, Buonaura A, Buonincontri L, Burke AT, Burr C, Bursche A, Butkevich A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calefice L, Cali S, Calladine R, Calvi M, Calvo Gomez M, Magalhaes PC, Campana P, Quezada AFC, Capelli S, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carli I, Carniti P, Carus L, Akiba KC, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Celani S, Cerasoli J, Cervenkov D, Chadwick AJ, Chapman MG, Charles M, Charpentier P, Barajas CAC, Chefdeville M, Chen C, Chen S, Chernov A, Chobanova V, Cholak S, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cicala MF, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff H, Closier Jet al., 2022,

Measurement of the charm mixing parameter yCP-yCPKπ using two-body D0 meson decays

, PHYSICAL REVIEW D, Vol: 105, ISSN: 2470-0010

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Citations: 2

Conference paper

Hori M, 2022,

Laser spectroscopy of three-body antiprotonic and pionic helium atoms at CERN and PSI

Some recent results on laser spectroscopy experiments of three-body antiprotonic helium atoms carried out at the Antiproton Decelerator facility of CERN, and pionic helium atoms carried out at the 590 MeV ring cyclotron facility of the Paul Scherrer Institute are reviewed. An infrared laser transition (n, ℓ) = (17, 16)→(17, 15) of pionic helium at a frequency of v ≈ 183760 GHz was detected.

Abstract
Cite

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Del Valle AE, Frühwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schöfbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Bols ES, DHondt J, De Moor A, Delcourt M, Faham HE, Lowette S, Moortgat S, Morton A, Müller D, Sahasransu AR, Tavernier S, Van Doninck W, Vannerom D, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Paredes S, Pétré L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Rendón C, Roskas C, Samalan A, Skovpen K, Tytgat M, Van Den Bossche N, Vermassen B, Wezenbeek L, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Teles PR, Júnior WLA, Pereira MAG, Filho MBF, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, Sousa VDS, De Souza SF, Herrera CM, Amarilo KM, Mundim L, Nogima H, Santoro A, Amaral SMSD, Sznajder A, Thiel M, De Araujo FTDS, Pereira AV, Bernardes CA, Calligaris L, Tomei TRFP, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang H, Zhao J, Agapitos A, An Y, Ban Y, Cheet al., 2022,

Search for invisible decays of the Higgs boson produced via vector boson fusion in proton-proton collisions at √s=13 TeV

, Physical Review D, Vol: 105, Pages: 1-36, ISSN: 2470-0010

A search for invisible decays of the Higgs boson produced via vector boson fusion (VBF) has been performed with 101 fb−1 of proton-proton collisions delivered by the LHC at √s=13 TeV and collected by the CMS detector in 2017 and 2018. The sensitivity to the VBF production mechanism is enhanced by constructing two analysis categories, one based on missing transverse momentum and a second based on the properties of jets. In addition to control regions with Z and W boson candidate events, a highly populated control region, based on the production of a photon in association with jets, is used to constrain the dominant irreducible background from the invisible decay of a Z boson produced in association with jets. The results of this search are combined with all previous measurements in the VBF topology, based on data collected in 2012 (at √s=8 TeV), 2015, and 2016, corresponding to integrated luminosities of 19.7, 2.3, and 36.3 fb−1, respectively. The observed (expected) upper limit on the invisible branching fraction of the Higgs boson is found to be 0.18 (0.10) at the 95% confidence level, assuming the standard model production cross section. The results are also interpreted in the context of Higgs-portal models.

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Dragicevic M, Del Valle AE, Fruhwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schofbeck R, Spanring M, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, D'Hondt J, De Clercq J, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Muller D, Sahasransu AR, Tavernier S, Van Doninck W, Van Mulders P, Stylianou N, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Grebenyuk A, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Vannerom D, Wezenbeek L, Fang W, Gao X, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Roskas C, Samalan A, Skovpen K, Tytgat M, Verbeke W, Vermassen B, Vit M, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Wuyckens S, Alves GA, Hensel C, Moraes A, Alda Junior WL, Gallo Pereira MA, Ferreira Filho MB, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, De Souza SF, Figueiredo DM, Herrera CM, Amarilo KM, Mundim L, Nogima H, Teles PR, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Guo Q, Javaid T, Mittal M, Wang H, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Miloseviet al., 2022,

Search for single production of a vector-like T quark decaying to a top quark and a Z boson in the final state with jets and missing transverse momentum at root s=13 TeV

, The Journal of High Energy Physics, Vol: 2022, Pages: 1-49, ISSN: 1029-8479

A search is presented for single production of a vector-like T quark with charge 2/3 e, in the decay channel featuring a top quark and a Z boson, with the top quark decaying hadronically and the Z boson decaying to neutrinos. The search uses data collected by the CMS experiment in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 137 fb−1 recorded at the CERN LHC in 2016–2018. The search is sensitive to a T quark mass between 0.6 and 1.8 TeV with decay widths ranging from negligibly small up to 30% of the T quark mass. Reconstruction strategies for the top quark are based on the degree of Lorentz boosting of its final state. At 95% confidence level, the upper limit on the product of the cross section and branching fraction for a T quark of small decay width varies between 15 and 602 fb, depending on its mass. For a T quark with decay widths between 10 and 30% of its mass, this upper limit ranges between 16 and 836 fb. For most of the studied range, the results provide the best limits to date. This is the first search for single T quark production based on the full Run 2 data set of the LHC.

Journal article

Tumasyan A, Adam W, Andrejkovic JW, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Del Valle AE, Fruhwirth R, Jeitler M, Krammer N, Lechner L, Liko D, Mikulec I, Paulitsch P, Pitters FM, Schieck J, Schofbeck R, Schwarz D, Templ S, Waltenberger W, Wulz C-E, Chekhovsky V, Litomin A, Makarenko V, Darwish MR, De Wolf EA, Janssen T, Kello T, Lelek A, Sfar HR, Van Mechelen P, Van Putte S, Van Remortel N, Bols ES, D'Hondt J, Delcourt M, El Faham H, Lowette S, Moortgat S, Morton A, Muller D, Sahasransu AR, Tavernier S, Van Doninck W, Vannerom D, Stylianou N, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Favart L, Kalsi AK, Lee K, Mahdavikhorrami M, Makarenko I, Moureaux L, Paredes S, Petre L, Popov A, Postiau N, Starling E, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, Gao X, Cornelis T, Dobur D, Knolle J, Lambrecht L, Mestdach G, Niedziela M, Rendon C, Roskas C, Samalan A, Skovpen K, Tytgat M, Vermassen B, Wezenbeek L, Benecke A, Bethani A, Bruno G, Bury F, Caputo C, David P, Delaere C, Donertas IS, Giammanco A, Jaffel K, Jain S, Lemaitre V, Mondal K, Prisciandaro J, Taliercio A, Teklishyn M, Tran TT, Vischia P, Wertz S, Alves GA, Hensel C, Moraes A, Teles PR, Alda Junior WL, Gallo Pereira MA, Ferreira Filho MB, Malbouisson HB, Carvalho W, Chinellato J, Da Costa EM, Da Silveira GG, Damiao DDJ, Sousa VDS, De Souza SF, Herrera CM, Amarilo KM, Mundim L, Nogima H, Santoro A, Silva Do Amaral SM, Sznajder A, Thiel M, Da Silva De Araujo FT, Pereira AV, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Gregores EM, Lemos DS, Mercadante PG, Novaes SF, Padula SS, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Petrov A, Cheng T, Javaid T, Mittal M, Yuan L, Ahmad M, Bauer G, Dozen C, Hu Z, Martins J, Wang Y, Yi K, Chapon E, Chen GM, Chen HS, Chen M, Iemmi F, Kapoor A, Leggat D, Liao H, Liu Z-A, Milosevic V, Monti F, Sharma R, Tao J, Thomas-Wilsker J, Wang J, Zhang Het al., 2022,

Measurement of the inclusive and differential t(t)over-bar gamma cross sections in the dilepton channel and effective field theory interpretation in proton-proton collisions at root s=13 TeV

, The Journal of High Energy Physics, Vol: 2022, Pages: 1-59, ISSN: 1029-8479

The production cross section of a top quark pair in association with a photon is measured in proton-proton collisions in the decay channel with two oppositely charged leptons (e±μ∓, e+e−, or μ+μ−). The measurement is performed using 138 fb−1 of proton-proton collision data recorded by the CMS experiment at s√ = 13 TeV during the 2016–2018 data-taking period of the CERN LHC. A fiducial phase space is defined such that photons radiated by initial-state particles, top quarks, or any of their decay products are included. An inclusive cross section of 175.2 ± 2.5(stat) ± 6.3(syst) fb is measured in a signal region with at least one jet coming from the hadronization of a bottom quark and exactly one photon with transverse momentum above 20 GeV. Differential cross sections are measured as functions of several kinematic observables of the photon, leptons, and jets, and compared to standard model predictions. The measurements are also interpreted in the standard model effective field theory framework, and limits are found on the relevant Wilson coefficients from these results alone and in combination with a previous CMS measurement of the tt¯γ production process using the lepton+jets final state.

Journal article

Aaij R, Abdelmotteleb ASW, Beteta CA, Abudinen F, Ackernley T, Adeva B, Adinolfi M, Afsharnia H, Agapopoulou C, Aidala CA, Aiola S, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Aliouche Z, Alkhazov G, Cartelle PA, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreianov A, Andreotti M, Archilli F, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Baldini W, de Souza Leite JB, Barbetti M, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Basels JM, Bashir S, Bassi G, Batsukh B, Battig A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga I, Beiter A, Belavin V, Belin S, Bellee V, Belous K, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Berninghoff D, Bernstein HC, Bertella C, Bertolin A, Betancourt C, Betti F, Bezshyiko I, Bhasin S, Bhom J, Bian L, Bieker MS, Biesuz N, Bifani S, Billoir P, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Boelhauve JA, Boente Garcia O, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Borsuk JT, Bouchiba SA, Bowcock TJ, Boyer A, Bozzi C, Bradley MJ, Braun S, Brea Rodriguez A, Brodzicka J, Gonzalo AB, Brundu D, Buonaura A, Buonincontri L, Burke AT, Burr C, Bursche A, Butkevich A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calefice L, Cali S, Calladine R, Calvi M, Gomez MC, Magalhaes PC, Campana P, Quezada AFC, Capelli S, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carli I, Carniti P, Carus L, Akiba KC, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Celani S, Cerasoli J, Cervenkov D, Chadwick AJ, Chapman MG, Charles M, Charpentier P, Barajas CAC, Chefdeville M, Chen C, Chen S, Chernov A, Chobanova V, Cholak S, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cicala MF, Vidal XC, Ciezarek G, Clarke PEL, Clemencic M, Cliff H, Closier J, Cobet al., 2022,

Observation of the Decay Λb0 → Λc+ τ-(ν)over-barτ

, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007

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Citations: 12

Journal article

Aaij R, Abdelmotteleb ASW, Beteta CA, Abudinén F, Ackernley T, Adeva B, Adinolfi M, Afsharnia H, Agapopoulou C, Aidala CA, Aiola S, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Albero AA, Aliouche Z, Alkhazov G, Cartelle PA, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreianov A, Andreotti M, Archilli F, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Bachmayer M, Back JJ, Rodriguez PB, Balagura V, Baldini W, Baptista de Souza Leite J, Barbetti M, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Basels JM, Bashir S, Bassi G, Batsukh B, Battig A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga I, Beiter A, Belavin V, Belin S, Bellee V, Belous K, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Berninghoff D, Bernstein HC, Bertella C, Bertolin A, Betancourt C, Betti F, Bezshyiko I, Bhasin S, Bhom J, Bian L, Bieker MS, Biesuz NV, Bifani S, Billoir P, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Bjørn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Boelhauve JA, Garcia OB, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Borsuk JT, Bouchiba SA, Bowcock TJV, Boyer A, Bozzi C, Bradley MJ, Braun S, Rodriguez AB, Brodzicka J, Gonzalo AB, Brundu D, Buonaura A, Buonincontri L, Burke AT, Burr C, Bursche A, Butkevich A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calefice L, Cali S, Calladine R, Calvi M, Gomez MC, Magalhaes PC, Campana P, Quezada AFC, Capelli S, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carli I, Carniti P, Carus L, Akiba KC, Vidal AC, Caspary R, Casse G, Cattaneo M, Cavallero G, Celani S, Cerasoli J, Cervenkov D, Chadwick AJ, Chapman MG, Charles M, Charpentier P, Barajas CAC, Chefdeville M, Chen C, Chen S, Chernov A, Chobanova V, Cholak S, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cicala MF, Vidal XC, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Cobbledick JL, Coco Vet al., 2022,

Observation of the Decay Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ}.

, Phys Rev Lett, Vol: 128

The first observation of the semileptonic b-baryon decay Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ}, with a significance of 6.1σ, is reported using a data sample corresponding to 3 fb^{-1} of integrated luminosity, collected by the LHCb experiment at center-of-mass energies of 7 and 8 TeV at the LHC. The τ^{-} lepton is reconstructed in the hadronic decay to three charged pions. The ratio K=B(Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ})/B(Λ_{b}^{0}→Λ_{c}^{+}π^{-}π^{+}π^{-}) is measured to be 2.46±0.27±0.40, where the first uncertainty is statistical and the second systematic. The branching fraction B(Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ})=(1.50±0.16±0.25±0.23)% is obtained, where the third uncertainty is from the external branching fraction of the normalization channel Λ_{b}^{0}→Λ_{c}^{+}π^{-}π^{+}π^{-}. The ratio of semileptonic branching fractions R(Λ_{c}^{+})≡B(Λ_{b}^{0}→Λ_{c}^{+}τ^{-}ν[over ¯]_{τ})/B(Λ_{b}^{0}→Λ_{c}^{+}μ^{-}ν[over ¯]_{μ}) is derived to be 0.242±0.026±0.040±0.059, where the external branching fraction uncertainty from the channel Λ_{b}^{0}→Λ_{c}^{+}μ^{-}ν[over ¯]_{μ} contributes to the last term. This result is in agreement with the standard model prediction.

Journal article

Aaij R, Abdelmotteleb ASW, Beteta CA, Abudinen F, Ackernley T, Adeva B, Adinolfi M, Afsharnia H, Agapopoulou C, Aidala CA, Aiola S, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Aliouche Z, Alkhazov G, Cartelle PA, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson N, Andreianov A, Andreotti M, Archilli F, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Baldini W, Leite JB, Barbetti M, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Basels JM, Bashir S, Bassi G, Batsukh B, Battig A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga I, Beiter A, Belavin V, Belin S, Bellee V, Belous K, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Berninghoff D, Bernstein HC, Bertella C, Bertolin A, Betancourt C, Betti F, Bezshyiko I, Bhasin S, Bhom J, Bian L, Bieker MS, Biesuz N, Bifani S, Billoir P, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Boelhauve JA, Boente Garcia O, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Borsuk JT, Bouchiba SA, Bowcock TJ, Boyer A, Bozzi C, Bradley MJ, Braun S, Brea Rodriguez A, Brodzicka J, Gonzalo AB, Brundu D, Buonaura A, Buonincontri L, Burke AT, Burr C, Bursche A, Butkevich A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calefice L, Cali S, Calladine R, Calvi M, Calvo Gomez M, Magalhaes PC, Campana P, Quezada AFC, Capelli S, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carli I, Carniti P, Carus L, Akiba KC, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Celani S, Cerasoli J, Cervenkov D, Chadwick AJ, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Barajas CAC, Chefdeville M, Chen C, Chen S, Chernov A, Chobanova V, Cholak S, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cicala MF, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic Met al., 2022,

Tests of Lepton Universality Using B0 → KS0l+ l- and B+ → K*+l+l- Decays

, PHYSICAL REVIEW LETTERS, Vol: 128, ISSN: 0031-9007

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Citations: 32

Journal article

Aaij R, Abdelmotteleb ASW, Abellan Beteta C, Abudinen F, Ackernley T, Adeva B, Adinolfi M, Afsharnia H, Agapopoulou C, Aidala CA, Aiola S, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Aliouche Z, Alkhazov G, Alvarez Cartelle P, Amato S, Amey JL, Amhis Y, An L, Anderlini L, Andersson M, Andreianov A, Andreotti M, Ao D, Archilli F, Artamonov A, Artuso M, Arzymatov K, Aslanides E, Atzeni M, Audurier B, Bachmann S, Bachmayer M, Back JJ, Baladron Rodriguez P, Balagura V, Baldini W, Baptista de Souza Leite J, Barbetti M, Barlow RJ, Barsuk S, Barter W, Bartolini M, Baryshnikov F, Basels JM, Bassi G, Batsukh B, Battig A, Bay A, Beck A, Becker M, Bedeschi F, Bediaga I, Beiter A, Belavin V, Belin S, Bellee V, Belous K, Belov I, Belyaev I, Bencivenni G, Ben-Haim E, Berezhnoy A, Bernet R, Berninghoff D, Bernstein HC, Bertella C, Bertolin A, Betancourt C, Betti F, Bezshyiko I, Bhasin S, Bhom J, Bian L, Bieker MS, Biesuz NV, Bifani S, Billoir P, Biolchini A, Birch M, Bishop FCR, Bitadze A, Bizzeti A, Bjorn M, Blago MP, Blake T, Blanc F, Blusk S, Bobulska D, Boelhauve JA, Boente Garcia O, Boettcher T, Boldyrev A, Bondar A, Bondar N, Borghi S, Borisyak M, Borsato M, Borsuk JT, Bouchiba SA, Bowcock TJV, Boyer A, Bozzi C, Bradley MJ, Braun S, Brea Rodriguez A, Brodzicka J, Brossa Gonzalo A, Brundu D, Buonaura A, Buonincontri L, Burke AT, Burr C, Bursche A, Butkevich A, Butter JS, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calefice L, Cali S, Calladine R, Calvi M, Calvo Gomez M, Camargo Magalhaes P, Campana P, Campoverde Quezada AF, Capelli S, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carli I, Carniti P, Carus L, Carvalho Akiba K, Casais Vidal A, Caspary R, Casse G, Cattaneo M, Cavallero G, Celani S, Cerasoli J, Cervenkov D, Chadwick AJ, Chapman MG, Charles M, Charpentier P, Chavez Barajas CA, Chefdeville M, Chen C, Chen S, Chernov A, Chobanova V, Cholak S, Chrzaszcz M, Chubykin A, Chulikov V, Ciambrone P, Cicala MF, Cid Vidaet al., 2022,

Search for the decay B0 → φμ+ μ-

, JOURNAL OF HIGH ENERGY PHYSICS, ISSN: 1029-8479

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Citations: 2

Journal article

Linehan R, Mannino RL, Fan A, Ignarra CM, Luitz S, Skarpaas K, Shutt TA, Akerib DS, Alsum SK, Anderson TJ, Araújo HM, Arthurs M, Auyeung H, Bailey AJ, Biesiadzinski TP, Breidenbach M, Cherwinka JJ, Conley RA, Genovesi J, Gilchriese MGD, Glaenzer A, Gonda TG, Hanzel K, Hoff MD, Ji W, Kaboth AC, Kravitz S, Kurita NR, Lambert AR, Lesko KT, Lorenzon W, Majewski PA, Miller EH, Monzani ME, Palladino KJ, Ratcliff BN, Saba JS, Santone D, Shutt GW, Stifter K, Szydagis M, Tomás A, Vavra J, Waldron WL, Webb RC, White RG, Whitis TJ, Wilson K, Wisniewski WJet al., 2022,

Design and production of the high voltage electrode grids and electron extraction region for the LZ dual-phase xenon time projection chamber

, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol: 1031, ISSN: 0168-9002

The dual-phase xenon time projection chamber (TPC) is a powerful tool for direct-detection experiments searching for WIMP dark matter, other dark matter models, and neutrinoless double-beta decay. Successful operation of such a TPC is critically dependent on the ability to hold high electric fields in the bulk liquid, across the liquid surface, and in the gas. Careful design and construction of the electrodes used to establish these fields is therefore required. We present the design and production of the LUX-ZEPLIN (LZ) experiment’s high-voltage electrodes, a set of four woven mesh wire grids. Grid design drivers are discussed, with emphasis placed on design of the electron extraction region. We follow this with a description of the grid production process and a discussion of steps taken to validate the LZ grids prior to integration into the TPC.

Imperial College London

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Search for the decay <i>B</i><SUP>0</SUP> → φμ<SUP>+</SUP> μ<SUP>-</SUP>

Design and production of the high voltage electrode grids and electron extraction region for the LZ dual-phase xenon time projection chamber

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Laser spectroscopy of three-body antiprotonic and pionic helium atoms at CERN and PSI