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Observation of a new boson with mass near 125 GeV in pp collisions at root s=7 and 8 TeV
CMS Collaboration
2013
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号6
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要A 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(-1) at root s = 7 TeV, and up to 5.3 fb(-1) at root s = 8 TeV. The results for five Higgs boson decay modes gamma gamma, ZZ, WW, tau tau, 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, gamma gamma and 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.
关键词MODEL HIGGS-BOSON STANDARD MODEL HADRON COLLIDERS QCD CORRECTIONS ELECTROWEAK CORRECTIONS PARTON DISTRIBUTIONS BROKEN SYMMETRIES WEAK INTERACTIONS CROSS-SECTIONS GAUGE-THEORIES
学科领域Physics
DOI10.1007/JHEP06(2013)081
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000321381800027
引用统计
被引频次:78[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/213564
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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CMS Collaboration. Observation of a new boson with mass near 125 GeV in pp collisions at root s=7 and 8 TeV[J]. JOURNAL OF HIGH ENERGY PHYSICS,2013(6).
APA CMS Collaboration.(2013).Observation of a new boson with mass near 125 GeV in pp collisions at root s=7 and 8 TeV.JOURNAL OF HIGH ENERGY PHYSICS(6).
MLA CMS Collaboration."Observation of a new boson with mass near 125 GeV in pp collisions at root s=7 and 8 TeV".JOURNAL OF HIGH ENERGY PHYSICS .6(2013).
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