IHEP OpenIR  > 粒子天体物理中心
Measurement of the properties of a Higgs boson in the four-lepton final state
CMS Collaboration
2014
发表期刊PHYSICAL REVIEW D
卷号89期号:9
通讯作者Chatrchyan, S (reprint author), Yerevan Phys Inst, Yerevan 375036, Armenia.
摘要The properties of a Higgs boson candidate are measured in the H -> ZZ -> 4l decay channel, with l = e, mu, using data from pp collisions corresponding to an integrated luminosity of 5.1 fb(-1) at the center-of-mass energy of root s = 7 TeV and 19.7 fb(-1) at ffiffiffi root s = 8 TeV, recorded with the CMS detector at the LHC. The new boson is observed as a narrow resonance with a local significance of 6.8 standard deviations, a measured mass of 125.6 +/- 0.4(stat) +/- 0.2(syst) GeV, and a total width <= 3.4 GeV at the 95% confidence level. The production cross section of the new boson times its branching fraction to four leptons is measured to be 0.93(-0.23)(+0.26) (stat)(-0.09)(+0.13) (syst) times that predicted by the standard model. Its spin-parity properties are found to be consistent with the expectations for the standard-model Higgs boson. The hypotheses of a pseudoscalar and all tested spin-1 boson hypotheses are excluded at the 99% confidence level or higher. All tested spin-2 boson hypotheses are excluded at the 95% confidence level or higher.
关键词HADRON-HADRON COLLISIONS ABELIAN GAUGE-THEORIES ATLAS DETECTOR PARTON DISTRIBUTIONS MASSLESS PARTICLES BROKEN SYMMETRIES WEAK INTERACTIONS ROOT-S=7 TEV LHC MODEL
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.89.092007
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000335914900002
引用统计
被引频次:168[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/311005/213708
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
推荐引用方式
GB/T 7714
CMS Collaboration. Measurement of the properties of a Higgs boson in the four-lepton final state[J]. PHYSICAL REVIEW D,2014,89(9).
APA CMS Collaboration.(2014).Measurement of the properties of a Higgs boson in the four-lepton final state.PHYSICAL REVIEW D,89(9).
MLA CMS Collaboration."Measurement of the properties of a Higgs boson in the four-lepton final state".PHYSICAL REVIEW D 89.9(2014).
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
1256.pdf(2683KB)期刊论文作者接受稿限制开放CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[CMS Collaboration]的文章
百度学术
百度学术中相似的文章
[CMS Collaboration]的文章
必应学术
必应学术中相似的文章
[CMS Collaboration]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。