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Limits on the Higgs boson lifetime and width from its decay to four charged leptons
CMS Collaboration
2015
发表期刊PHYSICAL REVIEW D
卷号92期号:7页码:72010
摘要Constraints on the lifetime and width of the Higgs boson are obtained from H -> ZZ -> 4l events using data recorded by the CMS experiment during the LHC run 1 with an integrated luminosity of 5.1 and 19.7 fb(-1) at a center-of-mass energy of 7 and 8 TeV, respectively. The measurement of the Higgs boson lifetime is derived from its flight distance in the CMS detector with an upper bound of tau(H) < 1.9 x 10(-13) s at the 95% confidence level (C.L.), corresponding to a lower bound on the width of Gamma(H) > 3.5 x 10(-9) MeV. The measurement of the width is obtained from an off-shell production technique, generalized to include anomalous couplings of the Higgs boson to two electroweak bosons. From this measurement, a joint constraint is set on the Higgs boson width and a parameter f(Lambda Q) that expresses an anomalous coupling contribution as an on-shell cross-section fraction. The limit on the Higgs boson width is Gamma(H) < 46 MeV with f(Lambda Q) unconstrained and Gamma(H) < 26 MeV for f(Lambda Q) = 0 at the 95% C.L. The constraint f(Lambda Q) < 3.8 x 10(-3) at the 95% C.L. is obtained for the expected standard model Higgs boson width.
文章类型Article
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.92.072010
收录类别SCI
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000363237600001
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被引频次:9[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/311005/228990
专题粒子天体物理中心
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CMS Collaboration. Limits on the Higgs boson lifetime and width from its decay to four charged leptons[J]. PHYSICAL REVIEW D,2015,92(7):72010.
APA CMS Collaboration.(2015).Limits on the Higgs boson lifetime and width from its decay to four charged leptons.PHYSICAL REVIEW D,92(7),72010.
MLA CMS Collaboration."Limits on the Higgs boson lifetime and width from its decay to four charged leptons".PHYSICAL REVIEW D 92.7(2015):72010.
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