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Impacts of the Higgs mass on vacuum stability, running fermion masses, and two-body Higgs decays
邢志忠;Xing, ZZ; Zhang, H; Zhou, S
2012
发表期刊PHYSICAL REVIEW D
卷号86期号:1页码:13013
摘要The recent results of the ATLAS and CMS experiments indicate 116 GeV less than or similar to M-H less than or similar to 131 GeV and 115 GeV less than or similar to M-H less than or similar to 127 GeV, respectively, for the mass of the Higgs boson in the standard model (SM) at the 95% confidence level. In particular, both experiments point to a preferred narrow mass range M-H similar or equal to (124 . . . 126) GeV. We examine the impact of this preliminary result of M-H on the SM vacuum stability by using the two-loop renormalization-group equations, and arrive at the cutoff scale Lambda(VS) similar to 4 X 10(12) GeV (for M-H = 125 GeV, M-t = 172.9 GeV, and alpha(s)(M-Z) = 0.1184), where the absolute stability of the SM vacuum is lost and some kind of new physics might take effect. We update the values of running lepton and quark masses at some typical energy scales, including the ones characterized by M-H, 1 TeV and Lambda(VS), with the help of the two-loop renormalization-group equations. The branching ratios of some important two-body Higgs decay modes, such as H -> b (b) over bar, H -> tau(+)tau(-), H -> gamma gamma, H -> W+W-, and H -> ZZ, are also recalculated by inputting the values of relevant particle masses at M-H.
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.86.013013
收录类别SCI
WOS记录号WOS:000306747100001
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被引频次:75[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/311005/224480
专题理论物理室
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邢志忠;Xing, ZZ,Zhang, H,Zhou, S. Impacts of the Higgs mass on vacuum stability, running fermion masses, and two-body Higgs decays[J]. PHYSICAL REVIEW D,2012,86(1):13013.
APA 邢志忠;Xing, ZZ,Zhang, H,&Zhou, S.(2012).Impacts of the Higgs mass on vacuum stability, running fermion masses, and two-body Higgs decays.PHYSICAL REVIEW D,86(1),13013.
MLA 邢志忠;Xing, ZZ,et al."Impacts of the Higgs mass on vacuum stability, running fermion masses, and two-body Higgs decays".PHYSICAL REVIEW D 86.1(2012):13013.
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