Imperial College London

ProfessorOliverBuchmueller

Faculty of Natural SciencesDepartment of Physics

Professor of Physics
 
 
 
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Contact

 

o.buchmueller

 
 
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Location

 

504Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

705 results found

Bertone G, Buchmueller OL, Cole PS, 2023, Perspectives on fundamental cosmology from Low Earth Orbit and the Moon, npj Microgravity, Vol: 9

The next generation of space-based experiments will go hunting for answers to cosmology’s key open questions which revolve around inflation, dark matter and dark energy. Low earth orbit and lunar missions within the European Space Agency’s Human and Robotic Exploration programme can push our knowledge forward in all of these three fields. A radio interferometer on the Moon, a cold atom interferometer in low earth orbit and a gravitational wave interferometer on the Moon are highlighted as the most fruitful missions to plan and execute in the mid-term.

Journal article

Alonso I, Alpigiani C, Altschul B, Araujo H, Arduini G, Arlt J, Badurina L, Balaz A, Bandarupally S, Barish BC, Barone M, Barsanti M, Bass S, Bassi A, Battelier B, Baynham CFA, Beaufils Q, Berge J, Bernabeu J, Bertoldi A, Bingham R, Bize S, Blas D, Bongs K, Bouyer P, Braitenberg C, Brand C, Braxmaier C, Bresson A, Buchmueller O, Budker D, Bugalho L, Burdin S, Cacciapuoti L, Callegari S, Calmet X, Calonico D, Canuel B, Caramete L-I, Carraz O, Cassettari D, Chakraborty P, Chattopadhyay S, Chauhan U, Chen X, Chen Y-A, Chiofalo ML, Coleman J, Corgier R, Cotter JP, Cruise AM, Cui Y, Davies G, De Roeck A, Demarteau M, Derevianko A, Di Clemente M, Djordjevic GS, Donadi S, Dore O, Dornan P, Doser M, Drougakis G, Dunningham J, Easo S, Eby J, Elertas G, Ellis J, Evans D, Examilioti P, Fadeev P, Fani M, Fassi F, Fattori M, Fedderke MA, Felea D, Feng C-H, Ferreras J, Flack R, Flambaum VV, Forsberg R, Fromhold M, Gaaloul N, Garraway BM, Georgousi M, Geraci A, Gibble K, Gibson V, Gill P, Giudice G, Goldwin J, Gould O, Grachov O, Graham PW, Grasso D, Griffin P, Guerlin C, Gupta RK, Haehnelt M, Hawkins L, Hees A, Henderson VA, Herr W, Herrmann S, Hird T, Hobson R, Hock V, Hogan JM, Holst B, Holynski M, Israelsson U, Jeglic P, Jetzer P, Juzeliunas G, Kaltenbaek R, Kamenik JF, Kehagias A, Kirova T, Kiss-Toth M, Koke S, Kolkowitz S, Kornakov G, Kovachy T, Krutzik M, Kumar M, Kumar P, Lammerzahl C, Landsberg G, Le Poncin-Lafitte C, Leibrandt DR, Leveque T, Lewicki M, Li R, Lipniacka A, Lisdat C, Liu M, Lopez-Gonzalez JL, Loriani S, Louko J, Luciano GG, Lundblad N, Maddox S, Mahmoud MA, Maleknejad A, March-Russell J, Massonnet D, McCabe C, Meister M, Meznarsic T, Micalizio S, Migliaccio F, Millington P, Milosevic M, Mitchell J, Morley GW, Muller J, Murphy E, Mustecaplioglu OE, O'Shea V, Oi DKL, Olson J, Pal D, Papazoglou DG, Pasatembou E, Paternostro M, Pawlowski K, Pelucchi E, dos Santos FP, Peters A, Pikovski I, Pilaftsis A, Pinto A, Prevedelli M, Puthiya-Veettil V, Quenby J, Rafelskiet al., 2022, Cold atoms in space: community workshop summary and proposed road-map, EPJ QUANTUM TECHNOLOGY, Vol: 9, ISSN: 2662-4400

Journal article

AbdusSalam SS, Agocs FJ, Allanach BC, Athron P, Balazs C, Bagnaschi E, Bechtle P, Buchmueller O, Beniwal A, Bhom J, Bloor S, Bringmann T, Buckley A, Butter A, Camargo-Molina JE, Chrzaszcz M, Conrad J, Cornell JM, Danninger M, de Blas J, De Roeck A, Desch K, Dolan M, Dreiner H, Eberhardt O, Ellis J, Ben F, Fedele M, Flaecher H, Fowlie A, Gonzalo TE, Grace P, Hamer M, Handley W, Harz J, Heinemeyer S, Hoof S, Hotinli S, Jackson P, Kahlhoefer F, Kowalska K, Kraemer M, Kvellestad A, Martinez ML, Mahmoudi F, Martinez Santos D, Martinez GD, Mishima S, Olive K, Paul A, Prim MT, Porod W, Raklev A, Renk JJ, Rogan C, Roszkowski L, de Austri RR, Sakurai K, Scaffidi A, Scott P, Sessolo EM, Stefaniak T, Stoecker P, Su W, Trojanowski S, Trotta R, Tsai Y-LS, Van den Abeele J, Valli M, Vincent AC, Weiglein G, White M, Wienemann P, Wu L, Zhang Yet al., 2022, Simple and statistically sound recommendations for analysing physical theories, REPORTS ON PROGRESS IN PHYSICS, Vol: 85, ISSN: 0034-4885

Journal article

Badurina L, Buchmueller O, Ellis J, Lewicki M, McCabe C, Vaskonen Vet al., 2022, Prospective sensitivities of atom interferometers to gravitational waves and ultralight dark matter, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES, Vol: 380, ISSN: 1364-503X

Journal article

Bertoldi A, Bongs K, Bouyer P, Buchmueller O, Canuel B, Caramete L-I, Chiofalo ML, Coleman J, De Roeck A, Ellis J, Graham PW, Haehnelt MG, Hees A, Hogan J, von Klitzing W, Krutzik M, Lewicki M, McCabe C, Peters A, Rasel E, Roura A, Sabulsky D, Schiller S, Schubert C, Signorini C, Sorrentino F, Singh Y, Tino GM, Vaskonen V, Zhan M-Set al., 2021, AEDGE: Atomic experiment for dark matter and gravity exploration in space, EXPERIMENTAL ASTRONOMY, Vol: 51, Pages: 1417-1426, ISSN: 0922-6435

Journal article

Alimena J, Beacham J, Borsato M, Cheng Y, Vidal XC, Cottin G, Curtin D, De Roeck A, Desai N, Evans JA, Knapen S, Kraml S, Lessa A, Liu Z, Mehlhase S, Ramsey-Musolf MJ, Russell H, Shelton J, Shuve B, Verducci M, Zurita J, Adams T, Adersberger M, Alpigiani C, Apresyan A, Bainbridge RJ, Batozskaya V, Beauchesne H, Benato L, Berlendis S, Bhal E, Blekman F, Borovilou C, Boyd J, Brau BP, Bryngemark L, Buchmueller O, Buschmann M, Buttinger W, Campanelli M, Cesarotti C, Chen C, Cheng H-C, Cheong S, Citron M, Coccaro A, Coco V, Conte E, Cormier F, Corpe LD, Craig N, Cui Y, Dall'Occo E, Dallapiccola C, Darwish MR, Davoli A, Cosa AD, Simone AD, Rose LD, Deppisch FF, Dey B, Diamond MD, Dienes KR, Dildick S, Doebrich B, Drewes M, Eich M, ElSawy M, Valle AED, Facini G, Farina M, Feng JL, Fischer O, Flaecher HU, Foldenauer P, Freytsis M, Fuks B, Galon I, Gershtein Y, Giagu S, Giammanco A, Gligorov VV, Golling T, Grancagnolo S, Gustavino G, Haas A, Hahn K, Hajer J, Hammad A, Heinrich L, Heisig J, Helo JC, Hesketh G, Hill CS, Hirsch M, Hohlmann M, Holmes T, Hulsbergen W, Huth J, Ilten P, Jacques T, Jayatilaka B, Jeng G-Y, Johns KA, Kaji T, Kasieczka G, Kats Y, Kazana M, Keller H, Khlopov MY, Kling F, Kolberg TR, Kostiuk I, Kuwertz ES, Kvam A, Landsberg G, Lanfranchi G, Lara I, Ledovskoy A, Linthorne D, Liu J, Longarini I, Lowette S, Lubatti H, Lutz M, Luo J, Mamuzic J, Marinangeli M, Mariotti A, Marlow D, McCullough M, McDermott K, Mermod P, Milstead D, Mishra-Sharma S, Mitsou VA, Berlingen JM, Moortgat F, Morandini A, Morris AP, Morse DM, Mrenna S, Nachman B, Nemevsek M, Nesti F, Ohm C, Pascoli S, Pedro K, Pena C, Rodriguez KJP, Piedra J, Pinfold JL, Policicchio A, Popara G, Prisciandaro J, Proffitt M, Rauco G, Redi F, Reece M, Hall AR, Sfar HR, Renner S, Robinson D, Roepe A, Ronzani M, Salvioni E, Santra A, Sawada R, Scholtz J, Schuster P, Schwaller P, Sebastiani C, Sekmen S, Selvaggi M, Si W, Soffi L, Stolarski D, Stuart D, III JS, Sung K, Taylor W, Templ S, Thomas B, Torro-Pastoet al., 2020, Searching for long-lived particles beyond the Standard Model at the Large Hadron Collider, JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, Vol: 47, ISSN: 0954-3899

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

Badurina L, Bentine E, Blas D, Bongs K, Bortoletto D, Bowcock T, Bridges K, Bowden W, Buchmueller O, Burrage C, Coleman J, Elertas G, Ellis J, Foot C, Gibson V, Haehnelt MG, Harte T, Hedges S, Hobson R, Holynski M, Jones T, Langlois M, Lellouch S, Lewicki M, Maiolino R, Majewski P, Malik S, March-Russell J, McCabe C, Newbold D, Sauer B, Schneider U, Shipsey I, Singh Y, Uchida MA, Valenzuela T, van der Grinten M, Vaskonen V, Vossebeld J, Weatherill D, Wilmut Iet al., 2020, AION: an atom interferometer observatory and network, JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, ISSN: 1475-7516

Journal article

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Bergauer T, Dragicevic M, Eroe J, Del Valle AE, Flechl M, Fruehwirth R, Jeitler M, Krammer N, Kraetschmer I, Liko D, Madlener T, Mikulec I, Rad N, Schieck J, Schoefbeck R, Spanring M, Spitzbart D, Waltenberger W, Wulz C-E, Zarucki M, Drugakov V, Mossolov V, Gonzalez JS, Darwish MR, De Wolf EA, Di Croce D, Janssen X, Lelek A, Pieters M, Sfar HR, Van Haevermaet H, Van Mechelen P, Van Putte S, Van Remortel N, Blekman F, Bols ES, Chhibra SS, D'Hondt J, De Clercq J, Lontkovskyi D, Lowette S, Marchesini I, Moortgat S, Python Q, Skovpen K, Tavernier S, Van Doninck W, Van Mulders P, Burns D, Beghin D, Bilin B, Clerbaux B, De Lentdecker G, Delannoy H, Dorney B, Favart L, Grebenyuk A, Kalsi AK, Popov A, Postiau N, Starling E, Thomas L, Vander Velde C, Vanlaer P, Vannerom D, Fang W, Gao X, Cornelis T, Dobur D, Khvastunov I, Niedziela M, Roskas C, Tytgat M, Verbeke W, Vermassen B, Vit M, Bondu O, Bruno G, Caputo C, David P, Delaere C, Delcourt M, Giammanco A, Lemaitre V, Prisciandaro J, Saggio A, Marono MV, Vischia P, Zobec J, Alves FL, Alves GA, Correia Silva G, Hensel C, Moraes A, Rebello Teles P, Belchior Batista das Chagas E, Carvalho W, Chinellato J, Coelho E, Da Costa EM, Silveira GG, De Jesus Damiao D, De Oliveira Martins C, Fonseca De Souza S, Huertas Guativa LM, Malbouisson H, Martins J, Matos Figueiredo D, Medina Jaime M, Melo De Almeida M, Mora Herrera C, Mundim L, Nogima H, Prado Da Silva WL, Sanchez Rosas LJ, Santoro A, Sznajder A, Thiel M, Tonelli Manganote EJ, Torres Da Silva De Araujo F, Vilela Pereira A, Bernardes CA, Calligaris L, Fernandez Perez Tomei TR, Novaes SF, Padula SS, Gregores EM, Mercadante PG, Aleksandrov A, Antchev G, Hadjiiska R, Iaydjiev P, Misheva M, Rodozov M, Shopova M, Sultanov G, Bonchev M, Dimitrov A, Ivanov T, Litov L, Pavlov B, Petkov P, Yuan L, Ahmad M, Hu Z, Wang Y, Dozen C, Chen GM, Chen HS, Chen M, Jiang CH, Leggat D, Liao H, Liu Z, Spiezia A, Tao J, Yazgan E, Zhang H, Zhang S, Zhao J, Agapet al., 2020, A search for the standard model Higgs boson decaying to charm quarks, The Journal of High Energy Physics, Vol: 2020, Pages: 1-54, ISSN: 1029-8479

A direct search for the standard model Higgs boson, H, produced in association with a vector boson, V (W or Z), and decaying to a charm quark pair is presented. The search uses a data set of proton-proton collisions corresponding to an integrated luminosity of 35.9 fb−1, collected by the CMS experiment at the LHC in 2016, at a centre-of-mass energy of 13 TeV. The search is carried out in mutually exclusive channels targeting specific decays of the vector bosons: W → ℓν, Z → ℓℓ, and Z → νν, where ℓ is an electron or a muon. To fully exploit the topology of the H boson decay, two strategies are followed. In the first one, targeting lower vector boson transverse momentum, the H boson candidate is reconstructed via two resolved jets arising from the two charm quarks from the H boson decay. A second strategy identifies the case where the two charm quark jets from the H boson decay merge to form a single jet, which generally only occurs when the vector boson has higher transverse momentum. Both strategies make use of novel methods for charm jet identification, while jet substructure techniques are also exploited to suppress the background in the merged-jet topology. The two analyses are combined to yield a 95% confidence level observed (expected) upper limit on the cross section σ(VH)B(H→cc¯¯) of 4.5 (2.4+1.0−0.7) pb, corresponding to 70 (37) times the standard model prediction.

Journal article

El-Neaj YA, Alpigiani C, Amairi-Pyka S, Araujo H, Balaz A, Bassi A, Bathe-Peters L, Battelier B, Belic A, Bentine E, Bernabeu J, Bertoldi A, Bingham R, Blas D, Bolpasi V, Bongs K, Bose S, Bouyer P, Bowcock T, Bowden W, Buchmueller O, Burrage C, Calmet X, Canuel B, Caramete L-I, Carroll A, Cella G, Charmandaris V, Chattopadhyay S, Chen X, Chiofalo ML, Coleman J, Cotter J, Cui Y, Derevianko A, De Roeck A, Djordjevic GS, Dornan P, Doser M, Drougkakis I, Dunningham J, Dutan I, Easo S, Elertas G, Ellis J, El Sawy M, Fassi F, Felea D, Feng C-H, Flack R, Foot C, Fuentes I, Gaaloul N, Gauguet A, Geiger R, Gibson V, Giudice G, Goldwin J, Grachov O, Graham PW, Grasso D, Van der Grinten M, Guendogan M, Haehnelt MG, Harte T, Hees A, Hobson R, Hogan J, Holst B, Holynski M, Kasevich M, Kavanagh BJ, Von Klitzing W, Kovachy T, Krikler B, Krutzik M, Lewicki M, Lien Y-H, Liu M, Luciano GG, Magnon A, Mahmoud MA, Malik S, McCabe C, Mitchell J, Pahl J, Pal D, Pandey S, Papazoglou D, Paternostro M, Penning B, Peters A, Prevedelli M, Puthiya-Veettil V, Quenby J, Rasel E, Ravenhall S, Ringwood J, Roura A, Sabulsky D, Sameed M, Sauer B, Schaffer SA, Schiller S, Schkolnik V, Schlippert D, Schubert C, Sfar HR, Shayeghi A, Shipsey I, Signorini C, Singh Y, Soares-Santos M, Sorrentino F, Sumner T, Tassis K, Tentindo S, Tino GM, Tinsley JN, Unwin J, Valenzuela T, Vasilakis G, Vaskonen V, Vogt C, Webber-Date A, Wenzlawski A, Windpassinger P, Woltmann M, Yazgan E, Zhan M-S, Zou X, Zupan Jet al., 2020, AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space, EPJ QUANTUM TECHNOLOGY, Vol: 7, ISSN: 2662-4400

Journal article

Abercrombie D, Akchurin N, Akilli E, Alcaraz Maestre J, Allen B, Gonzalez BA, Andrea J, Arbey A, Azuelos G, Azzi P, Backovic M, Bai Y, Banerjee S, Beacham J, Belyaev A, Boveia A, Brennan AJ, Buchmueller O, Buckley MR, Busoni G, Buttignol M, Cacciapaglia G, Caputo R, Carpenter L, Castro NF, Ceballos GG, Cheng Y, Chou JP, Cortes Gonzalez A, Cowden C, D'Eramo F, De Cosa A, De Gruttola M, De Roeck A, De Simone A, Deandrea A, Demiragli Z, DiFranzo A, Doglioni C, du Pree T, Erbacher R, Erdmann J, Fischer C, Flaecher H, Fox PJ, Fuks B, Genest M-H, Gomber B, Goudelis A, Gramling J, Gunion J, Hahn K, Haisch U, Harnik R, Harris PC, Hoepfner K, Hoh SY, Hsu DG, Hsu S-C, Iiyama Y, Ippolito V, Jacques T, Ju X, Kahlhoefer F, Kalogeropoulos A, Kaplan LS, Kashif L, Khoze VV, Khurana R, Kotov K, Kovalskyi D, Kulkarni S, Kunori S, Kutzner V, Lee HM, Lee S-W, Liew SP, Lin T, Lowette S, Madar R, Malik S, Maltoni F, Martinez Perez M, Mattelaer O, Mawatari K, McCabe C, Megy T, Morgante E, Mrenna S, Moon C-S, Narayanan SM, Nelson A, Novaes SF, Padeken KO, Pani P, Papucci M, Paulini M, Paus C, Pazzini J, Penning B, Peskin ME, Pinna D, Pazzini J, Penning B, Peskin ME, Pinna D, Procura M, Qazi SF, Racco D, Re E, Riotto A, Rizzo TG, Roehrig R, Salek D, Pineda AS, Sarkar S, Schmidt A, Schramm SR, Shepherd W, Singh G, Soffi L, Srimanobhas N, Sung K, Tait TMP, Theveneaux-Pelzer T, Thomas M, Tosi M, Trocino D, Undleeb S, Vichi A, Wang F, Wang L-T, Wang R-J, Whallon N, Worm S, Wu M, Wu SL, Yang H, Yang Y, Yu S-S, Zaldivar B, Zanetti M, Zhang Z, Zucchetta Aet al., 2020, Dark Matter benchmark models for early LHC Run-2 Searches: Report of the ATLAS/CMS Dark Matter Forum, PHYSICS OF THE DARK UNIVERSE, Vol: 27, ISSN: 2212-6864

Journal article

Boveia A, Buchmueller O, Busoni G, D'Eramo F, De Roeck A, De Simone A, Doglioni C, Dolan MJ, Genest M-H, Hahn K, Haisch U, Harris PC, Heisig J, Ippolito V, Kahlhoefer F, Khoze VV, Kulkarni S, Landsberg G, Lowette S, Malik S, Mangano M, McCabe C, Mrenna S, Pani P, du Pree T, Riotto A, Salek D, Schmidt-Hoberg K, Shepherd W, Tait TMP, Wang L-T, Worm S, Zurek Ket al., 2020, Recommendations on presenting LHC searches for missing transverse energy signals using simplified s-channel models of dark matter, PHYSICS OF THE DARK UNIVERSE, Vol: 27, ISSN: 2212-6864

Journal article

Albert A, Backovic M, Boveia A, Buchmueller O, Busoni G, De Roeck A, Doglioni C, DuPree T, Fairbairn M, Genest M-H, Gori S, Gustavino G, Hahn K, Haisch U, Harris PC, Hayden D, Ippolito V, John I, Kahlhoefer F, Kulkarni S, Landsberg G, Lowette S, Mawatari K, Riotto A, Shepherd W, Tait TMP, Tolley E, Tunney P, Zaldivar B, Zinser Met al., 2019, Recommendations of the LHC Dark Matter Working Group: Comparing LHC searches for dark matter mediators in visible and invisible decay channels and calculations of the thermal relic density, PHYSICS OF THE DARK UNIVERSE, Vol: 26, ISSN: 2212-6864

Journal article

Bagnaschi E, Costa JC, Sakurai K, Borsato M, Buchmueller O, De Roeck A, Dolan MJ, Ellis JR, Flacher H, Hahn K, Heinemeyer S, Lucio M, Martinez Santos D, Olive KA, Trifa S, Weiglein Get al., 2019, Global analysis of dark matter simplified models with leptophobic spin-one mediators using MasterCode, EUROPEAN PHYSICAL JOURNAL C, Vol: 79, ISSN: 1434-6044

Journal article

Tanabashi M, Grp PD, Hagiwara K, Hikasa K, Nakamura K, Sumino Y, Takahashi F, Tanaka J, Agashe K, Aielli G, Amsler C, Antonelli M, Asner DM, Baer H, Banerjee S, Barnett RM, Basaglia T, Bauer CW, Beatty JJ, Belousov VI, Beringer J, Bethke S, Bettini A, Bichsel H, Biebel O, Black KM, Blucher E, Buchmuller O, Burkert V, Bychkov MA, Cahn RN, Carena M, Ceccucci A, Cerri A, Chakraborty D, Chen M-C, Chivukula RS, Cowan G, Dahl O, 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, Dwyer DA, Eerola P, Eidelman S, Ellis J, Erler J, Ezhela VV, Fetscher W, Fields BD, Firestone R, Foster B, Freitas A, Gallagher H, Garren L, Gerber H-J, Gerbier G, Gershon T, Gershtein Y, Gherghetta T, Godizov AA, Goodman M, Grab C, Gritsan AV, Grojean C, Groom DE, Grunewald M, Gurtu A, Gutsche T, Haber HE, Hanhart C, Hashimoto S, Hayato Y, Hayes KG, Hebecker A, Heinemeyer S, Heltsley B, Hernandez-Rey JJ, Hisano J, Hocker A, Holder J, Holtkamp A, Hyodo T, Irwin KD, Johnson KF, Kado M, Karliner M, Katz UF, Klein SR, Klempt E, Kowalewski RV, Krauss F, Kreps M, Krusche B, Kuyanov YV, Kwon Y, Lahav O, Laiho J, Lesgourgues J, Liddle A, Ligeti Z, Lin C-J, Lippmann C, Liss TM, Littenberg L, Lugovsky KS, Lugovsky SB, Lusiani A, Makida Y, Maltoni F, Mannel T, Manohar AV, Marciano WJ, Martin AD, Masoni A, Matthews J, Meissner U-G, Milstead D, Mitche RE, Moenig K, Molaro P, Moortgat F, Moskovic M, Murayama H, Narain M, Nason P, Navas S, Neubert M, Nevski P, Nir Y, Olive KA, Griso SP, Parsons J, Patrignani C, Peacock JA, Pennington M, Petcov ST, Petrov VA, Pianori E, Piepke A, Pomarol A, Quadt A, Rademacker J, Raffelt G, Ratcliff BN, Richardson P, Ringwald A, Roesler S, Rolli S, Romaniouk A, Rosenberg LJ, Rosner JL, Rybka G, Ryutin RA, Sachrajda CT, Sakai Y, Salam GP, Sarkar S, Sauli F, Schneider O, Scholberg K, Schwartz AJ, Scott D, Sharma V, Sharpe SR, Shutt T, Silari M, Sjostrand T, Skands P, Skwarnicki T, Smith JGet al., 2018, Review of Particle Physics, Physical Review D, Vol: 98, ISSN: 2470-0010

The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 2,873new measurements from 758 papers, we list, evaluate, and average measured properties of gauge bosons and therecently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypotheticalparticles such as supersymmetric particles, heavy bosons, axions, dark photons, etc. Particle properties and searchlimits are listed in Summary Tables. We give numerous tables, figures, formulae, and reviews of topics such as HiggsBoson Physics, Supersymmetry, Grand Unified Theories, Neutrino Mixing, Dark Energy, Dark Matter, Cosmology,Particle Detectors, Colliders, Probability and Statistics. Among the 118 reviews are many that are new or heavilyrevised, including a new review on Neutrinos in Cosmology.Starting with this edition, the Review is divided into two volumes. Volume 1 includes the Summary Tablesand all review articles. Volume 2 consists of the Particle Listings. Review articles that were previously part of theListings are now included in volume 1.The complete Review (both volumes) is published online on the website of the Particle Data Group(http://pdg.lbl.gov) and in a journal. Volume 1 is available in print as the PDG Book. A Particle Physics Bookletwith the Summary Tables and essential tables, figures, and equations from selected review articles is also available.

Journal article

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Asilar E, Bergauer T, Brandstetter J, Brondolin E, Dragicevic M, Eroe J, Del Valle AE, Flechl M, Friedl M, Fruehwirth R, Ghete VM, Grossmann J, Hrubec J, Jeitler M, Koenig A, Krammer N, Kraetschmer I, Liko D, Madlener T, Mikulec I, Pree E, Rad N, Rohringer H, Schieck J, Schoefbeck R, Spanring M, Spitzbart D, Taurok A, Waltenberger W, Wittmann J, Wulz C-E, Zarucki M, Chekhovsky V, Mossolov V, Gonzalez JS, De Wolf EA, Di Croce D, Janssen X, Lauwers J, Pieters M, Van de Klundert M, Van Haevermaet H, Van Mechelen P, Van Remortel N, Abu Zeid S, Blekman F, D'Hondt J, De Bruyn I, De Clercq J, Deroover K, Flouris G, Lontkovskyi D, Lowette S, Marchesini I, Moortgat S, Moreels L, Python Q, Skovpen K, Tavernier S, Van Doninck W, Van Mulders P, Van Parijs I, Beghin D, Bilin B, Brun H, Clerbaux B, De Lentdecker G, Delannoy H, Dorney B, Fasanella G, Favart L, Goldouzian R, Grebenyuk A, Kalsi AK, Lenzi T, Luetic J, Maerschalk T, Seva T, Starling E, Vander Velde C, Vanlaer P, Vannerom D, Yonamine R, Zenoni F, Cornelis T, Dobur D, Fagot A, Gul M, Khvastunov I, Poyraz D, Roskas C, Trocino D, Tytgat M, Verbeke W, Vit M, Zaganidis N, Bakhshiansohi H, Bondu O, Brochet S, Bruno G, Caputo C, Caudron A, David P, De Visscher S, Delaere C, Delcourt M, Francois B, Giammanco A, Krintiras G, Lemaitre V, Magitteri A, Mertens A, Musich M, Piotrzkowski K, Quertenmont L, Saggio A, Marono MV, Wertz S, Zobec J, Alda Junior WL, Alves FL, Alves GA, Brito L, Correia Silva G, Hensel C, Moraes A, Pol ME, Rebello Teles P, Belchior Batista Das Chagas E, Carvalho W, Chinellato J, Coelho E, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Huertas Guativa LM, Malbouisson H, Melo De Almeida M, Mora Herrera C, Mundim L, Nogima H, Sanchez Rosas LJ, Santoro A, Sznajder A, Thiel M, Tonelli Manganote EJ, Torres Da Silva De Araujo F, Vilela Pereira A, Ahuja S, Bernardes CA, Fernandez Perez Tomei TR, Gregores EM, Mercadante PG, Novaes SF, Padula SS, Romeroet al., 2018, Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at root s=13 TeV, The Journal of High Energy Physics, Pages: 1-47, ISSN: 1029-8479

A search is presented for the decays of heavy exotic long-lived particles (LLPs) that are produced in proton-proton collisions at a center-of-mass energy of 13 TeV at the CERN LHC and come to rest in the CMS detector. Their decays would be visible during periods of time well separated from proton-proton collisions. Two decay scenarios of stopped LLPs are explored: a hadronic decay detected in the calorimeter and a decay into muons detected in the muon system. The calorimeter (muon) search covers a period of sensitivity totaling 721 (744) hours in 38.6 (39.0) fb−1 of data collected by the CMS detector in 2015 and 2016. The results are interpreted in several scenarios that predict LLPs. Production cross section limits are set as a function of the mean proper lifetime and the mass of the LLPs, for lifetimes between 100 ns and 10 days. These are the most stringent limits to date on the mass of hadronically decaying stopped LLPs, and this is the first search at the LHC for stopped LLPs that decay to muons.

Journal article

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Asilar E, Bergauer T, Brandstetter J, Brondolin E, Dragicevic M, Erö J, Escalante Del Valle A, Flechl M, Friedl M, Frühwirth R, Ghete VM, Grossmann J, Hrubec J, Jeitler M, König A, Krammer N, Krätschmer I, Liko D, Madlener T, Mikulec I, Pree E, Rad N, Rohringer H, Schieck J, Schöfbeck R, Spanring M, Spitzbart D, Taurok A, Waltenberger W, Wittmann J, Wulz CE, Zarucki M, Chekhovsky V, Mossolov V, Suarez Gonzalez J, De Wolf EA, Di Croce D, Janssen X, Lauwers J, Pieters M, Van De Klundert M, Van Haevermaet H, Van Mechelen P, Van Remortel N, Abu Zeid S, Blekman F, DHondt J, De Bruyn I, De Clercq J, Deroover K, Flouris G, Lontkovskyi D, Lowette S, Marchesini I, Moortgat S, Moreels L, Python Q, Skovpen K, Tavernier S, Van Doninck W, Van Mulders P, Van Parijs I, Beghin D, Bilin B, Brun H, Clerbaux B, De Lentdecker G, Delannoy H, Dorney B, Fasanella G, Favart L, Goldouzian R, Grebenyuk A, Kalsi AK, Lenzi T, Luetic J, Maerschalk T, Seva T, Starling E, Vander Velde C, Vanlaer P, Vannerom D, Yonamine R, Zenoni F, Cornelis T, Dobur D, Fagot A, Gul M, Khvastunov I, Poyraz D, Roskas Cet al., 2018, Search for decays of stopped exotic long-lived particles produced in proton-proton collisions at √s=13 TeV, Journal of High Energy Physics, Vol: 2018, ISSN: 1126-6708

© 2018, The Author(s). A search is presented for the decays of heavy exotic long-lived particles (LLPs) that are produced in proton-proton collisions at a center-of-mass energy of 13 TeV at the CERN LHC and come to rest in the CMS detector. Their decays would be visible during periods of time well separated from proton-proton collisions. Two decay scenarios of stopped LLPs are explored: a hadronic decay detected in the calorimeter and a decay into muons detected in the muon system. The calorimeter (muon) search covers a period of sensitivity totaling 721 (744) hours in 38.6 (39.0) fb−1 of data collected by the CMS detector in 2015 and 2016. The results are interpreted in several scenarios that predict LLPs. Production cross section limits are set as a function of the mean proper lifetime and the mass of the LLPs, for lifetimes between 100 ns and 10 days. These are the most stringent limits to date on the mass of hadronically decaying stopped LLPs, and this is the first search at the LHC for stopped LLPs that decay to muons.[Figure not available: see fulltext.].

Journal article

Bagnaschi E, Sakurai K, Borsato M, Buchmueller O, Citron M, Costa JC, De Roeck A, Dolan MJ, Ellis JR, Flacher H, Heinemeyer S, Lucio M, Martinez Santos D, Olive KA, Richards A, Spanos VC, Suarez Fernandez I, Weiglein Get al., 2018, Likelihood analysis of the pMSSM11 in light of LHC 13-TeV data, European Physical Journal C: Particles and Fields, Vol: 78, ISSN: 1434-6044

We use MasterCode to perform a frequentist analysis of the constraints on a phenomenological MSSM model with 11 parameters, the pMSSM11, including constraints from ∼36 /fb of LHC data at 13 TeV and PICO, XENON1T and PandaX-II searches for dark matter scattering, as well as previous accelerator and astrophysical measurements, presenting fits both with and without the (g−2)μ constraint. The pMSSM11 is specified by the following parameters: 3 gaugino masses M1,2,3 , a common mass for the first-and second-generation squarks mq~ and a distinct third-generation squark mass mq~3 , a common mass for the first-and second-generation sleptons mℓ~ and a distinct third-generation slepton mass mτ~ , a common trilinear mixing parameter A, the Higgs mixing parameter μ , the pseudoscalar Higgs mass MA and tanβ . In the fit including (g−2)μ , a Bino-like χ~01 is preferred, whereas a Higgsino-like χ~01 is mildly favoured when the (g−2)μ constraint is dropped. We identify the mechanisms that operate in different regions of the pMSSM11 parameter space to bring the relic density of the lightest neutralino, χ~01 , into the range indicated by cosmological data. In the fit including (g−2)μ , coannihilations with χ~02 and the Wino-like χ~±1 or with nearly-degenerate first- and second-generation sleptons are active, whereas coannihilations with the χ~02 and the Higgsino-like χ~±1 or with first- and second-generation squarks may be important when the (g−2)μ constraint is dropped. In the two cases, we present χ2 functions in two-dimensional mass planes as well as their one-dimensional profile projections and best-fit spectra. Prospects remain for discovering strongly-interacting sparticles at the LHC, in both the scenarios with and without the (g−2)μ constraint, as well as for discovering electroweakly-interacting sparticles

Journal article

Sirunyan AM, Tumasyan A, Adam W, Ambrogi F, Asilar E, Bergauer T, Brandstetter J, Brondolin E, Dragicevic M, Erö J, Escalante Del Valle A, Flechl M, Friedl M, Frühwirth R, Ghete VM, Grossmann J, Hrubec J, Jeitler M, König A, Krammer N, Krätschmer I, Liko D, Madlener T, Mikulec I, Pree E, Rad N, Rohringer H, Schieck J, Schöfbeck R, Spanring M, Spitzbart D, Waltenberger W, Wittmann J, Wulz C-E, Zarucki M, Chekhovsky V, Mossolov V, Suarez Gonzalez J, De Wolf EA, Di Croce D, Janssen X, Lauwers J, Van De Klundert M, Van Haevermaet H, Van Mechelen P, Van Remortel N, Abu Zeid S, Blekman F, D'Hondt J, De Bruyn I, De Clercq J, Deroover K, Flouris G, Lontkovskyi D, Lowette S, Marchesini I, Moortgat S, Moreels L, Python Q, Skovpen K, Tavernier S, Van Doninck W, Van Mulders P, Van Parijs I, Beghin D, Bilin B, Brun H, Clerbaux B, De Lentdecker G, Delannoy H, Dorney B, Fasanella G, Favart L, Goldouzian R, Grebenyuk A, Kalsi AK, Lenzi T, Luetic J, Maerschalk T, Marinov A, Seva T, Starling E, Vander Velde C, Vanlaer P, Vannerom D, Yonamine R, Zenoni F, Zhang F, Cornelis T, Dobur D, Fagot A, Gul M, Khvastunov I, Poyraz D, Roskas C, Salva S, Tytgat M, Verbeke W, Zaganidis N, Bakhshiansohi H, Bondu O, Brochet S, Bruno G, Caputo C, Caudron A, David P, De Visscher S, Delaere C, Delcourt M, Francois B, Giammanco A, Komm M, Krintiras G, Lemaitre V, Magitteri A, Mertens A, Musich M, Piotrzkowski K, Quertenmont L, Saggio A, Vidal Marono M, Wertz S, Zobec J, Aldá Júnior WL, Alves FL, Alves GA, Brito L, Correa Martins Junior M, Hensel C, Moraes A, Pol ME, Rebello Teles P, Belchior Batista Das Chagas E, Carvalho W, Chinellato J, Coelho E, Da Costa EM, Da Silveira GG, De Jesus Damiao D, Fonseca De Souza S, Huertas Guativa LM, Malbouisson H, Melo De Almeida M, Mora Herrera C, Mundim L, Nogima H, Sanchez Rosas LJ, Santoro A, Sznajder A, Thiel M, Tonelli Manganote EJ, Torres Da Silva De Araujo F, Vilela Pereira A, Ahuja S, Bernardes CA, Fernandez Perez Tomei TR, Gregores EM, Mercadante PG, Novaeset al., 2018, Search for pair production of excited top quarks in the lepton + jets final state, Physics Letters B, Vol: 778, Pages: 349-370, ISSN: 0370-2693

A search is performed for the pair production of spin-3/2 excited top quarks, each decaying to a top quark and a gluon. The search uses the data collected with the CMS detector from proton–proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9. Events are selected by requiring an isolated muon or electron, an imbalance in the transverse momentum, and at least six jets of which exactly two must be compatible with originating from the fragmentation of a bottom quark. No significant excess over the standard model predictions is found. A lower limit of 1.2 TeV is set at 95% confidence level on the mass of the spin-3/2 excited top quark in an extension of the Randall–Sundrum model, assuming a 100% branching fraction of its decay into a top quark and a gluon. These are the best limits to date in a search for excited top quarks and the first at 13 TeV.

Journal article

Costa JC, Bagnaschi E, Sakurai K, Borsato M, Buchmueller O, Citron M, De Roeck A, Dolan MJ, Ellis JR, Flacher H, Heinemeyer S, Lucio M, Santos DM, Olive KA, Richards A, Weiglein Get al., 2018, Likelihood analysis of the sub-GUT MSSM in light of LHC 13-TeV data, European Physical Journal C: Particles and Fields, Vol: 78, ISSN: 1434-6044

We describe a likelihood analysis using MasterCode of variants of the MSSM in which the soft supersymmetry-breaking parameters are assumed to have universal values at some scale Min below the supersymmetric grand unification scale MGUT , as can occur in mirage mediation and other models. In addition to Min , such ‘sub-GUT’ models have the 4 parameters of the CMSSM, namely a common gaugino mass m1/2 , a common soft supersymmetry-breaking scalar mass m0 , a common trilinear mixing parameter A and the ratio of MSSM Higgs vevs tanβ , assuming that the Higgs mixing parameter μ>0 . We take into account constraints on strongly- and electroweakly-interacting sparticles from ∼36 /fb of LHC data at 13 TeV and the LUX and 2017 PICO, XENON1T and PandaX-II searches for dark matter scattering, in addition to the previous LHC and dark matter constraints as well as full sets of flavour and electroweak constraints. We find a preference for Min∼105 to 109GeV , with Min∼MGUT disfavoured by Δχ2∼3 due to the BR(Bs,d→μ+μ−) constraint. The lower limits on strongly-interacting sparticles are largely determined by LHC searches, and similar to those in the CMSSM. We find a preference for the LSP to be a Bino or Higgsino with mχ~01∼1TeV , with annihilation via heavy Higgs bosons H / A and stop coannihilation, or chargino coannihilation, bringing the cold dark matter density into the cosmological range. We find that spin-independent dark matter scattering is likely to be within reach of the planned LUX-Zeplin and XENONnT experiments. We probe the impact of the (g−2)μ constraint, finding similar results whether or not it is included.

Journal article

Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Alfonso Albero A, Ali S, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Batozskaya V, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Beliy N, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Berninghoff D, Bertholet E, Bertolin A, Betancourt C, Betti F, Bettler M-O, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bizzeti A, Bjorn M, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Brundu D, Buchanan E, Burr C, Bursche A, Buytaert J, Byczynski W, Cadeddu S, Cai H, Calabrese R, Calladine R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Garcia LC, Cattaneo M, Cavallero G, Cenci R, Chamont D, Chapman MG, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung SF, Chitic S-G, Chobanova V, Chrzaszcz M, Chubykin A, Ciambrone P, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Colombo T, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Currie R, D'Ambrosio C, Da Cunha Marinho F, Dall'Occo E, Dalseno J, Davis A, Francisco ODA, De Capua S, Deet al., 2017, Measurement of the Y(nS) polarizations in pp collisions at √s = 7 and 8 TeV, The Journal of High Energy Physics, Vol: 2017, ISSN: 1029-8479

The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies s√=7 and 8 TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and 2 fb−1, respectively. The measurements are performed in three polarization frames, using Y → μμ decays in the kinematic region of the transverse momentum p T Υ  < 30 GeV/c and rapidity 2.2 < yY < 4.5. No large polarization is observed.Open image in new window

Journal article

Buchmueller O, De Roeck A, Hahn K, McCullough M, Schwaller P, Sung K, Yu T-Tet al., 2017, Simplified models for displaced dark matter signatures, Journal of High Energy Physics, Vol: 2017, ISSN: 1029-8479

We propose a systematic programme to search for long-lived neutral particle signatures through a minimal set of displaced Open image in new window searches (dMETs). Our approach is to extend the well-established dark matter simplified models to include displaced vertices. The dark matter simplified models are used to describe the primary production vertex. A displaced secondary vertex, characterised by the mass of the long-lived particle and its lifetime, is added for the displaced signature. We show how these models can be motivated by, and mapped onto, complete models such as gauge-mediated SUSY breaking and models of neutral naturalness. We also outline how this approach may be used to extend other simplified models to incorporate displaced signatures and to characterise searches for long-lived charged particles. Displaced vertices are a striking signature which is often virtually background free, and thus provide an excellent target for the high-luminosity run of the Large Hadron Collider. The proposed models and searches provide a first step towards a systematic broadening of the displaced dark matter search programme.

Journal article

Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Cartelle PA, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, d'Argent P, Romeu JA, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler M-O, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Gomez MC, Camboni A, Campana P, Perez DHC, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Akiba KC, Casse G, Cassina L, Garcia LC, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung S-F, Chobanova V, Chrzaszcz M, Chubykin A, Vidal XC, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Sobral CMC, Couturier B, Cowan GA, Craik DC, Crocombe A, Torres MC, Cunliffe S, Currie R, D'Ambrosio C, Marinho FDC, Dall'Occo E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone P, Dean CT, Decamp D, Deckenhoff M, Del Buono L, Dembinski H-et al., 2017, Measurement of B-s(0) and D-s(-) Meson Lifetimes, Physical Review Letters, Vol: 119, ISSN: 0031-9007

We report on a measurement of the flavor-specific B0s lifetime and of the D−s lifetime using proton-proton collisions at center-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to 3.0  fb−1 of integrated luminosity. Approximately 407 000 B0s→D(*)−sμ+νμ decays are partially reconstructed in the K+K−π−μ+ final state. The B0s and D−s natural widths are determined using, as a reference, kinematically similar B0→D(*)−μ+νμ decays reconstructed in the same final state. The resulting differences between widths of B0s and B0 mesons and of D−s and D− mesons are ΔΓ(B)=−0.0115±0.0053(stat)±0.0041(syst)  ps−1 and ΔΓ(D)=1.0131±0.0117(stat)±0.0065(syst)  ps−1, respectively. Combined with the known B0and D− lifetimes, these yield the flavor-specific B0s lifetime, τfsB0s=1.547±0.013(stat)±0.010(syst)±0.004(τB)  ps and the D−s lifetime, τD−s=0.5064±0.0030(stat)±0.0017(syst)±0.0017(τD)  ps. The last uncertainties originate from the limited knowledge of the B0 and D− lifetimes. The results improve upon current determinations.

Journal article

Aaij R, Adeva B, Adinolfi M, Ajaltouni Z, Akar S, Albrecht J, Alessio F, Alexander M, Ali S, Alkhazov G, Alvarez Cartelle P, Alves AA, Amato S, Amerio S, Amhis Y, An L, Anderlini L, Andreassi G, Andreotti M, Andrews JE, Appleby RB, Archilli F, dArgent P, Arnau Romeu J, Artamonov A, Artuso M, Aslanides E, Auriemma G, Baalouch M, Babuschkin I, Bachmann S, Back JJ, Badalov A, Baesso C, Baker S, Balagura V, Baldini W, Baranov A, Barlow RJ, Barschel C, Barsuk S, Barter W, Baryshnikov F, Baszczyk M, Batozskaya V, Batsukh B, Battista V, Bay A, Beaucourt L, Beddow J, Bedeschi F, Bediaga I, Beiter A, Bel LJ, Bellee V, Belloli N, Belous K, Belyaev I, Ben-Haim E, Bencivenni G, Benson S, Beranek S, Berezhnoy A, Bernet R, Bertolin A, Betancourt C, Betti F, Bettler M-O, van Beuzekom M, Bezshyiko I, Bifani S, Billoir P, Birnkraut A, Bitadze A, Bizzeti A, Blake T, Blanc F, Blouw J, Blusk S, Bocci V, Boettcher T, Bondar A, Bondar N, Bonivento W, Bordyuzhin I, Borgheresi A, Borghi S, Borisyak M, Borsato M, Bossu F, Boubdir M, Bowcock TJV, Bowen E, Bozzi C, Braun S, Britton T, Brodzicka J, Buchanan E, Burr C, Bursche A, Buytaert J, Cadeddu S, Calabrese R, Calvi M, Calvo Gomez M, Camboni A, Campana P, Campora Perez DH, Capriotti L, Carbone A, Carboni G, Cardinale R, Cardini A, Carniti P, Carson L, Carvalho Akiba K, Casse G, Cassina L, Castillo Garcia L, Cattaneo M, Cavallero G, Cenci R, Chamont D, Charles M, Charpentier P, Chatzikonstantinidis G, Chefdeville M, Chen S, Cheung S-F, Chobanova V, Chrzaszcz M, Chubykin A, Cid Vidal X, Ciezarek G, Clarke PEL, Clemencic M, Cliff HV, Closier J, Coco V, Cogan J, Cogneras E, Cogoni V, Cojocariu L, Collins P, Comerma-Montells A, Contu A, Cook A, Coombs G, Coquereau S, Corti G, Corvo M, Costa Sobral CM, Couturier B, Cowan GA, Craik DC, Crocombe A, Cruz Torres M, Cunliffe S, Currie R, DAmbrosio C, Da Cunha Marinho F, DallOcco E, Dalseno J, David PNY, Davis A, De Bruyn K, De Capua S, De Cian M, De Miranda JM, De Paula L, De Serio M, De Simone Pet al., 2017, Measurement of Bs0 and Ds− meson lifetimes, Physical Review Letters, Vol: 119, Pages: 101801-1-101801-10, ISSN: 0031-9007

We report on a measurement of the flavor-specific B0s lifetime and of the D−s lifetime using proton-proton collisions at center-of-mass energies of 7 and 8 TeV, collected by the LHCb experiment and corresponding to 3.0  fb−1 of integrated luminosity. Approximately 407 000 B0s→D(*)−sμ+νμ decays are partially reconstructed in the K+K−π−μ+ final state. The B0s and D−s natural widths are determined using, as a reference, kinematically similar B0→D(*)−μ+νμ decays reconstructed in the same final state. The resulting differences between widths of B0s and B0 mesons and of D−s and D− mesons are ΔΓ(B)=−0.0115±0.0053(stat)±0.0041(syst)  ps−1 and ΔΓ(D)=1.0131±0.0117(stat)±0.0065(syst)  ps−1, respectively. Combined with the known B0 and D− lifetimes, these yield the flavor-specific B0s lifetime, τfsB0s=1.547±0.013(stat)±0.010(syst)±0.004(τB)  ps and the D−s lifetime, τD−s=0.5064±0.0030(stat)±0.0017(syst)±0.0017(τD)  ps. The last uncertainties originate from the limited knowledge of the B0 and D− lifetimes. The results improve upon current determinations.

Journal article

Sirunyan AM, Tumasyan A, Adam W, Asilar E, Bergauer T, Brandstetter J, Brondolin E, Dragicevic M, Eroe J, Flechl M, Friedl M, Fruehwirthl R, Ghete VM, Hartl C, Hoermann N, Hrubec J, Jeitler M, Koenig A, Kraetschmer I, Liko D, Matsushita T, Mikulec I, Rabady D, Rad N, Rahbaran B, Rohringer H, Schieck J, Strauss J, Waltenberger W, Wulz C-E, Dvornikov O, Makarenko V, Mossolov V, Gonzalez JS, Zykunov V, Shumeiko N, Alderweireldt S, De Wolf EA, Janssen X, Lauwers J, De Klundert MV, Van Haevermaet H, Van Mechelen P, Van Remortel N, Van Spilbeeck A, Abu Zeid S, Blekman F, D'Hondt J, Daci N, De Bruyn I, Deroover K, Lowette S, Moortgat S, Moreels L, Olbrechts A, Python Q, Skovpen K, Tavernier S, Van Doninck W, Van Mulders P, Van Parijs I, Brun H, Clerbaux B, De Lentdecker G, Delannoy H, Fasanella G, Favart L, Goldouzian R, Grebenyuk A, Karapostoli G, Lenzi T, Leonard A, Luetic J, Maerschalk T, Marinov A, Randle-Conde A, Seva T, Velde CV, Vanlaer P, Vannerom D, Yonamine R, Zenoni F, Zhang F, Cimmino A, Cornelis T, Dobur D, Fagot A, Gul M, Khvastunov I, Poyraz D, Salva S, Schofbeck R, Tytgat M, Van Driessche W, Yazgan E, Zaganidis N, Bakhshiansohi H, Beluffi C, Bondu O, Brochet S, Bruno G, Caudron A, De Visscher S, Delaere C, Delcourt M, Francois B, Giammanco A, Jafari A, Komm M, Krintiras G, Lemaitre V, Magitteri A, Mertens A, Musich M, Piotrzkowski K, Quertenmont L, Selvaggi M, Marono MV, Wertz S, Beliy N, Alda Junior WL, Alves FL, Alves GA, Brito L, Hensel C, Moraes A, Pol ME, Rebello Teles P, Belchior Batista Das Chagas E, Carvalho W, Chinellato J, Custodio A, Da Costa EM, Da Silveira GG, De Jesus Damiao D, De Oliveira Martins C, Fonseca De Souza S, Huertas Guativa LM, Malbouisson H, Matos Figueiredo D, Mora Herrera C, Mundim L, Nogima H, Prado Da Silva WL, Santoro A, Sznajder A, Tonelli Manganote EJ, Vilela Pereira A, Ahuja S, Bernardes CA, Dogra S, Fernandez Perez Tomei TR, Gregores EM, Mercadante PG, Moon CS, Novaes SF, Padula SS, Romero Abad D, Ruiz Vargas JC, Aleksandet al., 2017, Search for dijet resonances in proton-proton collisions at root s=13 TeV and constraints on dark matter and other models, Physics Letters B, Vol: 769, Pages: 520-542, ISSN: 0370-2693

A search is presented for narrow resonances decaying to dijet final states in proton–proton collisions at using data corresponding to an integrated luminosity of 12.9 fb−1. The dijet mass spectrum is well described by a smooth parameterization and no significant evidence for the production of new particles is observed. Upper limits at 95% confidence level are reported on the production cross section for narrow resonances with masses above 0.6 TeV. In the context of specific models, the limits exclude string resonances with masses below 7.4 TeV, scalar diquarks below 6.9 TeV, axigluons and colorons below 5.5 TeV, excited quarks below 5.4 TeV, color-octet scalars below 3.0 TeV, bosons below 2.7 TeV, bosons below 2.1 TeV and between 2.3 and 2.6 TeV, and RS gravitons below 1.9 TeV. These extend previous limits in the dijet channel. Vector and axial-vector mediators in a simplified model of interactions between quarks and dark matter are excluded below 2.0 TeV. The first limits in the dijet channel on dark matter mediators are presented as functions of dark matter mass and are compared to the exclusions of dark matter in direct detection experiments.

Journal article

Bagnaschi E, Borsato M, Sakurai K, Buchmueller O, Cavanaugh R, Chobanova V, Citron M, Costa JC, De Roeck A, Dolan MJ, Ellis JR, Flaecher H, Heinemeyer S, Isidori G, Lucio M, Luo F, Martinez Santos D, Olive KA, Richards A, Weiglein Get al., 2017, Likelihood analysis of the minimal AMSB model, EUROPEAN PHYSICAL JOURNAL C, Vol: 77, ISSN: 1434-6044

Journal article

Buchmueller O, Doglioni C, Wang L-T, 2017, Search for dark matter at colliders, NATURE PHYSICS, Vol: 13, Pages: 217-223, ISSN: 1745-2473

Journal article

Bagnaschi E, Costa JC, Sakurai K, Borsato M, Buchmueller O, Cavanaugh R, Chobanova V, Citron M, De Roeck A, Dolan MJ, Ellis JR, Flacher H, Heinemeyer S, Isidori G, Lucio M, Martinez Santos D, Olive KA, Richards A, de Vries KJ, Weiglein Get al., 2017, Likelihood analysis of supersymmetric SU(5) GUTs, EUROPEAN PHYSICAL JOURNAL C, Vol: 77, ISSN: 1434-6044

Journal article

Khachatryan V, Sirunyan AM, Tumasyan A, Adam W, Asilar E, Bergauer T, Brandstetter J, Brondolin E, Dragicevic M, Eroe J, Flechl M, Friedl M, Fruehwirth R, Ghete VM, Hartl C, Hoermann N, Hrubec J, Jeitler M, Koenig A, Krammer M, Kraetschmer I, Liko D, Matsushita T, Mikulec I, Rabady D, Rad N, Rahbaran B, Rohringer H, Schieck J, Strauss J, Treberer-Treberspurg W, Waltenberger W, Wulz C-E, Mossolov V, Shumeiko N, Gonzalez JS, Alderweireldt S, Cornelis T, De Wolf EA, Janssen X, Knutsson A, Lauwers J, Luyckx S, Van de Klundert M, Van Haevermaet H, Van Mechelen R, Van Remortel N, Van Spilbeeck A, Abu Zeid S, Blekman F, D'Hondt J, Daci N, De Bruyn I, Deroover K, Heracleous N, Keaveney J, Lowette S, Moortgat S, Moreels L, Olbrechts A, Python Q, Strom D, Tavernier S, Van Doninck W, Van Mulders R, Van Parijs I, Brun H, Caillol C, Clerbaux B, De Lentdecker G, Fasanella G, Favart L, Goldouzian R, Grebenyuk A, Karapostoli G, Lenzi T, Leonard A, Maerschalk T, Marinov A, Randle-Conde A, Seva T, Vander Velde C, Vanlaer R, Yonamine R, Zenoni F, Zhang F, Benucci L, Cimmino A, Crucy S, Dobur D, Fagot A, Garcia G, Gul M, Mccartin J, Rios AAO, Poyraz D, Ryckbosch D, Salva S, SchOfbeck R, Sigamani M, Tytgat M, Van Driessche W, Yazgan E, Zaganidis N, Beluffi C, Bondu, Brochet S, Bruno G, Caudron A, Ceard L, De Visscher S, Delaere C, Delcourt M, Forthomme L, Francois B, Giammanco A, Jafari A, Jez R, Komm M, Lemaitre V, Magitteri A, Mertens A, Musich M, Nuttens C, Piotrzkowski K, Quertenmont L, Selvaggi M, Marono MV, Wertz S, Beliy N, Hammad GH, Alda Junior WL, Alves FL, Alves GA, Brito L, Correa Martins Junior M, Hamer M, Hensel C, Moraes A, Pol ME, Rebello Teles P, Belchior Batista Das Chagas E, Carvalho W, Chinellato J, Custodio A, Da Costa EM, De Jesus Damiao D, De Oliveira Martins C, Fonseca De Souza S, Huertas Guativa LM, Malbouisson H, Matos Figueiredo D, Mora Herrera C, Mundim L, Nogima H, Prado Da Silva WL, Santoro A, Sznajder A, Tonelli Manganote EJ, Vilela Pereira A, Ahuja S, Beet al., 2017, Search for top squark pair production in compressed-mass-spectrum scenarios in proton-proton collisions at √s=8 TeV using the αT variable, PHYSICS LETTERS B, Vol: 767, Pages: 403-430, ISSN: 0370-2693

An inclusive search is performed for supersymmetry in final states containing jets and an apparent imbalance in transverse momentum, View the MathML sourcep→Tmiss, due to the production of unobserved weakly interacting particles in pp collisions at a centre-of-mass energy of 8 TeV. The data, recorded with the CMS detector at the CERN LHC, correspond to an integrated luminosity of 18.5 fb−1. The dimensionless kinematic variable αTαT is used to discriminate between events with genuine View the MathML sourcep→Tmiss associated with unobserved particles and spurious values of View the MathML sourcep→Tmiss arising from jet energy mismeasurements. No excess of event yields above the expected standard model backgrounds is observed. The results are interpreted in terms of constraints on the parameter space of several simplified models of supersymmetry that assume the pair production of top squarks. The search provides sensitivity to a broad range of top squark (View the MathML sourcet˜) decay modes, including the two-body decay View the MathML sourcet˜→cχ˜10, where c is a charm quark and View the MathML sourceχ˜10 is the lightest neutralino, as well as the four-body decay View the MathML sourcet˜→bff¯′χ˜10, where b is a bottom quark and f and View the MathML sourcef¯′ are fermions produced in the decay of an intermediate off-shell W boson. These modes dominate in scenarios in which the top squark and lightest neutralino are nearly degenerate in mass. For these modes, top squarks with masses as large as 260 and 225 GeV are excluded, respectively, for the two- and four-body decays.

Journal article

Albert A, Bauer M, Brooke J, Buchmueller O, Cerdeno DG, Citron M, Davies G, de Cosa A, De Roeck A, De Simone A, Du Pree T, Flaecher H, Fairbairn M, Ellis J, Grohsjean A, Hahn K, Haisch U, Harris PC, Khoze VV, Landsberg G, McCabe C, Penning B, Sanz V, Schwanenberger C, Scott P, Wardle Net al., 2017, Towards the next generation of simplified Dark Matter models, Physics of the Dark Universe, Vol: 16, Pages: 49-70, ISSN: 2212-6864

This White Paper is an input to the ongoing discussion about the extension and refinement of simplified Dark Matter (DM) models. It is not intended as a comprehensive review of the discussed subjects, but instead summarises ideas and concepts arising from a brainstorming workshop that can be useful when defining the next generation of simplified DM models (SDMM). In this spirit, based on two concrete examples, we show how existing SDMM can be extended to provide a more accurate and comprehensive framework to interpret and characterise collider searches. In the first example we extend the canonical SDMM with a scalar mediator to include mixing with the Higgs boson. We show that this approach not only provides a better description of the underlying kinematic properties that a complete model would possess, but also offers the option of using this more realistic class of scalar mixing models to compare and combine consistently searches based on different experimental signatures. The second example outlines how a new physics signal observed in a visible channel can be connected to DM by extending a simplified model including effective couplings. In the next part of the White Paper we outline other interesting options for SDMM that could be studied in more detail in the future. Finally, we review important aspects of supersymmetric models for DM and use them to propose how to develop more complete SDMMs.

Journal article

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