Observation of a new boson with mass near 125 GeV in pp collisions at root s=7 and 8 TeV
文献类型：期刊论文
| 作者 | CMS Collaboration |
| 刊名 | JOURNAL OF HIGH ENERGY PHYSICS
 |
| 出版日期 | 2013 |
| 期号 | 6 |
| 关键词 | MODEL HIGGS-BOSON STANDARD MODEL HADRON COLLIDERS QCD CORRECTIONS ELECTROWEAK CORRECTIONS PARTON DISTRIBUTIONS BROKEN SYMMETRIES WEAK INTERACTIONS CROSS-SECTIONS GAUGE-THEORIES |
| 通讯作者 | Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia. |
| 英文摘要 | 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. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000321381800027 |
| 公开日期 | 2016-02-25 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213564]  |
| 专题 | 高能物理研究所_粒子天体物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | 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). |
入库方式： OAI收割
来源：高能物理研究所
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