Higgs decays in supersymmetric models with light neutralinos
arXiv:0708.0248 · doi:10.1103/PhysRevD.76.075017
Abstract
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 --> χχand 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 --> γγ, gets suppressed.
9 pages, 5 figures
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