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

Details Invisibly decaying Higgs boson in the Littlest Higgs model with T-parity Invisibly decaying Higgs boson in the Littlest Higgs model with T-parity

2007-07-11

arxiv.org/abs/0707.1591v1

AIPConf.Proc.939:59-62,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 2 figures, Latex (stylefiles included); Talk presented by A.N. at the International Workshop on Theoretical High Ener

Scientific paper

10.1063/1.2803787

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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