Observation of a new boson with mass near 125 GeV in pp collisions at $ \sqrt{s}=7 $ and 8 TeV

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Jun 2013Embargo end date: 01 Jan 2013 Italy, Belgium, Italy, France, Italy, Italy, Italy, France, Turkey, Hungary, United States, Croatia, Spain, Italy, Croatia, Belgium, Belgium, Italy, United Kingdom, United States, Italy, Italy, Germany, United Kingdom, Spain, Brazil, Italy, United States, Greece, Spain, Italy, Italy, Italy, Italy, United Kingdom, Italy, Spain, Italy, Italy, Germany, Italy, Italy, Italy, Italy, France, Italy, Portugal English Publisher:Springer Science and Business Media LLCJournal:Journal of High Energy Physics, volume 2,013 (eissn: 1029-8479,

Copyright policy )Publicly fundedFunded by:SNSF | Search for New Physics an..., MZOS | Experimental physics at L..., SNSF | Search for the Higgs boso... +2 projects

Authors: Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; +193 Authors

Chatrchyan, S.; Khachatryan, V.; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Bergauer, T.; Dragicevic, M.; Eroe, J.; Fabjan, C.; Friedl, M.; Fruehwirth, R.; Ghete, V. M.; Hoermann, N.; Hrubec, J.; Jeitler, M.; Kiesenhofer, W.; Knuenz, V.; Krammer, M.; Kraetschmer, I.; Liko, D.; Mikulec; I.; Rabady, D.; Rahbaran, B.; Rohringer, C.; Rohringer, H.; Schoefbeck, R.; Strauss, J.; Taurok, A.; Treberer-treberspurg, W.; Waltenberger, W.; Wulz, C. -E.; Mossolov, V.; Shumeiko, N.; Gonzalez, J. Suarez; Alderweireldt; S.; Bansal, M.; Bansal, S.; Cornelis, T.; De Wolf, E. A.; Janssen, X.; Knutsson, A.; Luyckx, S.; Mucibello, L.; Ochesanu, S.; Roland, B.; Rougny, R.; Van Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Van Spilbeeck, A.; Blekman; F.; Blyweert, S.; D'Hondt, J.; Kalogeropoulos, A.; Keaveney; J.; Maes, M.; Olbrechts, A.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Onsem, G. P.; Villella, I.; Clerbaux; B.; De Lentdecker, G.; Gay, A. P. R.; Hreus, T.; Leonard, A.; Marage, P. E.; Mohammadi, A.; Reis, T.; Thomas, L.; Vander Velde, C.; Vanlaer, P.; Wang, J.; Adler, V.; Beernaert, K.; Benucci, L.; Cimmino, A.; Costantini, S.; Dildick, S.; Garcia, G.; Klein, B.; Lellouch, J.; Marinov; A.; Mccartin, J.; Rios, A. A. Ocampo; Ryckbosch, D.; Sigamani, M.; Strobbe, N.; Thyssen, F.; Tytgat, M.; Walsh; S.; Yazgan, E.; Zaganidis, N.; Basegmez, S.; Bruno, G.; Castello, R.; Caudron, A.; Ceard, L.; Delaere, C.; du Pree; T.; Favart, D.; Forthomme, L.; Giammanco, A.; Hollar, J.; Lemaitre, V.; Liao, J.; Militaru, O.; Nuttens, C.; Pagano; D.; Pin, A.; Piotrzkowski, K.; Popov, A.; Selvaggi, M.; Garcia, J. M. Vizan; Beliy, N.; Caebergs, T.; Daubie, E.; Hammad, G. H.; Alves, G. A.; Correa Martins Junior, M.; Martins, T.; Pol, M. E.; Souza, M. H. G.; Alda Junior, W. L.; Carvalho, W.; Chinellato, J.; Custodio, A.; Da Costa, E. M.; De Jesus Damiao, D.; De Oliveira Martins, C.; Fonseca De; Souza, S.; Malbouisson, H.; Malek, M.; Matos Figueiredo, D.; Mundim, L.; Nogima, H.; Prado Da Silva, W. L.; Santoro, A.; Soares Jorge, L.; Sznajder, A.; Tonelli Manganote, E. J.; Vilela Pereira, A.; Anjos, T. S.; Bernardes, C. A.; Dias, F. A.; Fernandez Perez Tomei, T. R.; Gregores, E. M.; Lagana, C.; Marinho, F.; Mercadante, P. G.; Novaes, S. F.; Padula, Sandra; S.; Genchev, V.; Iaydjiev, P.; Piperov, S.; Rodozov, M.; Stoykova, S.; Sultanov, G.; Tcholakov, V.; Trayanov, R.; Vutova, M.; Dimitrov, A.; Hadjiiska, R.; Kozhuharov, V.; Litov, L.; Pavlov, B.; Petkov, P.; Bian, J. G.; Chen, G. M.; Chen, H. S.; Jiang, C. H.; Liang, D.; Liang, S.; Meng; X.; Tao, J.; Wang, J.; Wang, X.; Wang, Z.; Xiao, H.; Xu, M.; Asawatangtrakuldee, C.; Ban, Y.; Guo, Y.; Li, Q.; Li, W.; Liu, S.; Mao, Y.;

doi: 10.1007/jhep06(2013)081 , 10.48550/arxiv.1303.4571

arXiv: 1303.4571

Observation of a new boson with mass near 125 GeV in pp collisions at $ \sqrt{s}=7 $ and 8 TeV

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Abstract

AbstractA detailed description is reported of the analysis used by the CMS Collaboration in the search for the standard model Higgs boson in pp collisions at the LHC, which led to the observation of a new boson. The data sample corresponds to integrated luminosities up to 5.1 fb−1at$ \sqrt{s}=7 $TeV, and up to 5.3 fb−1at$ \sqrt{s}=8 $TeV.The results for five Higgs boson decay modesγγ, ZZ, WW,ττ, and bb, which show a combined local significance of 5 standard deviations near 125 GeV, are reviewed. A fit to the invariant mass of the two high resolution channels,γγand ZZ → 4ℓ, gives a mass estimate of 125.3 ± 0.4 (stat.) ± 0.5 (syst.) GeV. The measurements are interpreted in the context of the standard model Lagrangian for the scalar Higgs field interacting with fermions and vector bosons. The measured values of the corresponding couplings are compared to the standard model predictions. The hypothesis of custodial symmetry is tested through the measurement of the ratio of the couplings to the W and Z bosons. All the results are consistent, within their uncertainties, with the expectations for a standard model Higgs boson.

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Italy, Belgium, Italy, France, Italy, Italy, Italy, France, Turkey, Hungary, United States, Croatia, Spain, Italy, Croatia, Belgium, Belgium, Italy, United Kingdom, United States, Italy, Italy, Germany, United Kingdom, Spain, Brazil, Italy, United States, Greece, Spain, Italy, Italy, Italy, Italy, United Kingdom, Italy, Spain, Italy, Italy, Germany, Italy, Italy, Italy, Italy, France, Italy, Portugal

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Keywords

INTERACTIONS, CROSS-SECTIONS, PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), high energy collider; LHC; CMS; Higgs boson, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], HADRON COLLIDERS, info:eu-repo/classification/ddc/530, Fisica delle particelle, Hadron-Hadron Scattering; Nuclear and High Energy Physics, Higgs particle. bottom anti-bottom, CMS, Physics, ddc:530, Energy scale, mass spectrum. two-photon, GAUGE-THEORIES, Physique des particules élémentaires, LHC; CMS; HEP, MODEL HIGGS-BOSON; STANDARD MODEL; HADRON COLLIDERS; QCD CORRECTIONS; ELECTROWEAK CORRECTIONS; PARTON DISTRIBUTIONS; BROKEN SYMMETRIES; WEAK INTERACTIONS; CROSS-SECTIONS; GAUGE-THEORIES, PARTICLE PHYSICS, Hadron-hadron Scattering, data analysis method, Nuclear and High Energy Physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Higgs boson, STANDARD MODEL, Hadron-Hadron Scattering;, FOS: Physical sciences, Higgs particle, Hadron-hadron scattering, 530, MODEL HIGGS-BOSON, BROKEN SYMMETRIES, High Energy Physics, Hadron-Hadron Scattering, Proton proton collisions, Física, LARGE HADRON COLLIDER, Higgs particle. decay modes, QC Physics / fizika, PARTON DISTRIBUTIONS, WEAK, ELECTROWEAK CORRECTIONS, Higgs particle. coupling, QCD CORRECTIONS, experimental results, Higgs

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