Invisibly decaying Higgs boson in the littlest Higgs model with T-parity

被引：0
|
作者：
Hundi, R. Srikanth [1 ]
Mukhopadhyaya, B. [1 ]
Nyffeler, A. [1 ]
机构：
[1] Harish Chandra Res Inst, Chhatnag Rd, Allahabad 211019, Uttar Pradesh, India
来源：
THEORETICAL HIGH ENERGY PHYSICS | 2007年 / 939卷
关键词：
non-standard-model Higgs boson; invisible Higgs decay mode; discrete symmetries;
D O I：
暂无
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
We show that there are regions in the parameter space of the Littlest Higgs model with T-parity, allowed by electroweak precision data, where the Higgs boson can decay invisibly into a pair of heavy photons A(H) with a substantial branching ratio. For a symmetry breaking scale f in the range 450-600 GeV, the BR(H -> A(H)A(H)) can be up to 95% for an intermediate mass Higgs, and from 20% down to a few percents for a Higgs boson of mass 200 GeV or above. The total decay width of the Higgs boson can thereby be enhanced by an order of magnitude compared to the Standard Model for Higgs masses around 130 GeV.
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页码：59 / +
页数：2
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