Impacts of the Higgs mass on vacuum stability, running fermion masses, and two-body Higgs decays

	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
刊名	PHYSICAL REVIEW D
	2012
卷号	86 期号:1 页码:13013
英文摘要	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.
学科主题	Astronomy & Astrophysics; Physics
收录类别	SCI
WOS记录号	WOS:000306747100001
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/224480]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	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.