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

文献类型:期刊论文

CMS Collaboration
SourcePHYSICS LETTERS B
2012
Volume716Issue:1Pages:30-61
KeywordMODEL HIGGS-BOSON STANDARD MODEL HADRON COLLIDERS QCD CORRECTIONS PP COLLISIONS ROOT-S=7 TEV ELECTROWEAK CORRECTIONS PARTON DISTRIBUTIONS BROKEN SYMMETRIES WEAK INTERACTIONS
Corresponding AuthorSphicas, P (reprint author), CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland.
English AbstractResults 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.
SubjectPhysics
WOS SubjectPhysics, Multidisciplinary
Indexed TypeSCI
Language英语
WOS IDWOS:000309621400002
Available Date2016-02-25
Citation statistics
源URL[http://ir.ihep.ac.cn/handle/311005/213340]  
Collection高能物理研究所_粒子天体物理中心
Affiliation中国科学院高能物理研究所
Recommended Citation
GB/T 7714
CMS Collaboration. Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC[J]. PHYSICS LETTERS B,2012,716(1):30-61.
APA CMS Collaboration.(2012).Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC.PHYSICS LETTERS B,716(1),30-61.
MLA CMS Collaboration."Observation of a new boson at a mass of 125 GeV with the CMS experiment at the LHC".PHYSICS LETTERS B 716.1(2012):30-61.

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来源:高能物理研究所

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