Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC

被引：4216

作者：

Chatrchyan, S. ^{[26
]}

Khachatryan, V. ^{[26
]}

Sirunyan, A. M. ^{[26
]}

Tumasyan, A. ^{[26
]}

Adam, W. ^{[2
]}

Aguilo, E. ^{[2
]}

Bergauer, T. ^{[2
]}

Dragicevic, M. ^{[2
]}

Eroe, J. ^{[2
]}

Fabjan, C. ^{[2
,187
]}

Friedl, M. ^{[2
]}

Fruehwirth, R. ^{[2
,187
]}

Ghete, V. M. ^{[2
]}

Hammer, J. ^{[2
]}

Hoch, M. ^{[2
]}

Hoermann, N. ^{[2
]}

Hrubec, J. ^{[2
]}

Jeitler, M. ^{[2
,187
]}

Kiesenhofer, W. ^{[2
]}

Knuenz, V. ^{[2
]}

Krammer, M. ^{[2
,187
]}

Kraetschmer, I. ^{[2
]}

Liko, D. ^{[2
]}

Majerotto, W. ^{[2
]}

Mikulec, I. ^{[2
]}

Pernicka, M. ^{[2
]}

Rahbaran, B. ^{[2
]}

Rohringer, C. ^{[2
]}

Rohringer, H. ^{[2
]}

Schoefbeck, R. ^{[2
]}

Strauss, J. ^{[2
]}

Szoncso, F. ^{[2
]}

Taurok, A. ^{[2
]}

Waltenberger, W. ^{[2
]}

Walzel, G. ^{[2
]}

Widl, E. ^{[2
]}

Wulz, C. -E. ^{[2
,187
]}

Chekhovsky, V. ^{[3
]}

Emeliantchik, I. ^{[3
]}

Litomin, A. ^{[3
]}

Makarenko, V. ^{[3
]}

Mossolov, V. ^{[3
]}

Shumeiko, N. ^{[3
]}

Solin, A. ^{[3
]}

Stefanovitch, R. ^{[3
]}

Gonzalez, J. Suarez ^{[3
]}

Fedorov, A. ^{[4
]}

Korzhik, M. ^{[4
]}

Missevitch, O. ^{[4
]}

Zuyeuski, R. ^{[4
]}

机构：

[1] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland

[2] Inst Hochenergiephys OeAW, Vienna, Austria

[3] Natl Ctr Particle & High Energy Phys, Minsk, BELARUS

[4] Res Inst Nucl Problems, Minsk, BELARUS

[5] Univ Antwerp, B-2020 Antwerp, Belgium

[6] Vrije Univ Brussel, Brussels, Belgium

[7] Univ Libre Bruxelles, Brussels, Belgium

[8] Univ Ghent, B-9000 Ghent, Belgium

[9] Catholic Univ Louvain, B-1348 Louvain, Belgium

[10] Univ Mons, B-7000 Mons, Belgium

[11] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil

[12] Univ Estado Rio de Janeiro, BR-20550011 Rio De Janeiro, Brazil

[13] Univ Estadual Paulista, Inst Fis Teor, BR-01405 Sao Paulo, Brazil

[14] Bulgarian Acad Sci, Inst Nucl Res & Nucl Energy, Sofia, Bulgaria

[15] Inst Syst Engn & Robot, Sofia, Bulgaria

[16] Univ Sofia, BU-1126 Sofia, Bulgaria

[17] Inst High Energy Phys, Beijing 100039, Peoples R China

[18] Peking Univ, State Key Lab Nucl Phys & Tech, Beijing 100871, Peoples R China

[19] Univ Los Andes, Bogota, Colombia

[20] Tech Univ Split, Split, Croatia

[21] Univ Split, Split, Croatia

[22] Rudjer Boskovic Inst, Zagreb, Croatia

[23] Univ Cyprus, Nicosia, Cyprus

[24] Charles Univ Prague, Prague, Czech Republic

[25] Acad Sci Res & Technol Arab Republ Egypt, Egyptian Network High Energy Phys, Cairo, Egypt

[26] Yerevan Phys Inst, Yerevan 375036, Armenia

[27] NICPB, Tallinn, Estonia

[28] Univ Helsinki, Dept Phys, Helsinki, Finland

[29] Helsinki Inst Phys, Helsinki, Finland

[30] Lappeenranta Univ Technol, Lappeenranta, Finland

[31] CEA Saclay, DSM IRFU, F-91191 Gif Sur Yvette, France

[32] Ecole Polytech, CNRS IN2P3, Lab Leprince Ringuet, Palaiseau, France

[33] Univ Haute Alsace Mulhouse, Univ Strasbourg, CNRS IN2P3, Inst Pluridisciplinaire Hubert Curien, Strasbourg, France

[34] CNRS IN2P3, Inst Natl Phys Nucl & Phys Particules, Ctr Calcul, Villeurbanne, France

[35] Univ Lyon 1, CNRS IN2P3, Inst Phys Nucl Lyon, Villeurbanne, France

[36] Georgian Acad Sci, E Andronikashvili Inst Phys, GE-380060 Tbilisi, Georgia

[37] Tbilisi State Univ, Inst High Energy Phys & Informatizat, GE-380086 Tbilisi, Georgia

[38] Rhein Westfal TH Aachen, Inst Phys 1, Aachen, Germany

[39] Rhein Westfal TH Aachen, Phys Inst A 3, Aachen, Germany

[40] Rhein Westfal TH Aachen, Phys Inst B 3, Aachen, Germany

[41] Deutsch Elekt Synchrotron, Hamburg, Germany

[42] Univ Hamburg, Hamburg, Germany

[43] Univ Karlsruhe, Inst Expt Kernphys, D-7500 Karlsruhe, Germany

[44] Inst Nucl Phys Demokritos, Aghia Paraskevi, Greece

[45] Univ Athens, Athens, Greece

[46] Univ Ioannina, GR-45110 Ioannina, Greece

[47] KFKI Res Inst Particle & Nucl Phys, Budapest, Hungary

[48] Inst Nucl Res ATOMKI, Debrecen, Hungary

[49] Debrecen Univ Med, H-4012 Debrecen, Hungary

[50] Panjab Univ, Chandigarh 160014, India

来源：

PHYSICS LETTERS B | 2012年 / 716卷 / 01期

基金：

芬兰科学院; 巴西圣保罗研究基金会; 奥地利科学基金会; 欧洲研究理事会; 美国国家科学基金会;

关键词：

CMS; Physics; Higgs; MODEL HIGGS-BOSON; STANDARD MODEL; PP COLLISIONS; ELECTROWEAK CORRECTIONS; PARTON DISTRIBUTIONS; BROKEN SYMMETRIES; QCD CORRECTIONS; SEARCH; COLLIDERS; SPECTRUM;

D O I：

10.1016/j.physletb.2012.08.021

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Results are presented from searches for the standard model Higgs boson in proton-proton collisions at root s = 7 and 8 TeV in the Compact Muon Solenoid experiment at the LHC, using data samples corresponding to integrated luminosities of up to 5.1 fb(-1) at 7 TeV and 5.3 fb(-1) at 8 TeV. The search is performed in five decay modes: gamma gamma, ZZ, W+W-, tau(+)tau(-), and b (b) over bar. An excess of events is observed above the expected background, with a local significance of 5.0 standard deviations, at a mass near 125 GeV, signalling the production of a new particle. The expected significance for a standard model Higgs boson of that mass is 5.8 standard deviations. The excess is most significant in the two decay modes with the best mass resolution, gamma gamma and ZZ; a fit to these signals gives a mass of 125.3 +/- 0.4(stat.) +/- 0.5(syst.) GeV. The decay to two photons indicates that the new particle is a boson with spin different from one. (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.

引用

页码：30 / 61

页数：32

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