Higgs decays in supersymmetric models with light neutralinos
Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D, Particles, fields, gravitation, and cosmology2007Vol. 76(7)
Citations Over TimeTop 10% of 2007 papers
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 $h\ensuremath{\rightarrow}\ensuremath{\chi}\ensuremath{\chi}$ and determine the region in the supersymmetric parameter space where it is significant. 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 $h\ensuremath{\rightarrow}\ensuremath{\gamma}\ensuremath{\gamma}$, gets suppressed.
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