Higgs decays in supersymmetric models with light neutralinos

Details Higgs decays in supersymmetric models with light neutralinos Higgs decays in supersymmetric models with light neutralinos

2007-08-02

arxiv.org/abs/0708.0248v1

Phys.Rev.D76:075017,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, 5 figures

Scientific paper

10.1103/PhysRevD.76.075017

In the Minimal Supersymmetric Standard Model, neutralinos lighter than 50 GeV are compatible with all accelerator, precision, and cosmological bounds. Such neutralinos might constitute a relevant decay channel for the Higgs boson, modifying its expected signatures at hadron colliders. We study the branching ratio h --> \chi\chi and determine the region in the supersymmetric parameter space where it is sizable. We have found that, in fact, the Higgs may dominantly decay into neutralino pairs. Besides, as a result of this new channel, the branching ratio into visible modes, such as h --> \gamma\gamma, gets suppressed.

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