2007/08/02 by Carlos E. Yaguna
Physics and Astronomy · #Black Holes and Theoretical Physics #Branching fraction #Cosmology and Gravitation Theories #Hadron #Higgs boson #Minimal Supersymmetric Standard Model #Neutralino #Nuclear physics #Parameter space #Particle physics #Particle physics theoretical and experimental studies #Physics #Standard Model (mathematical formulation) #Statistics #Supersymmetry #hep-ph
paper · pdf · doi:10.1103/physrevd.76.075017
published as Phys.Rev.D76:075017,2007 · 9 pages, 5 figures
arxiv created 2007/08/02 · openalex publication_date 2007/10/30 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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→\ensuremathχ\ensuremathχ 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→\ensuremathγ\ensuremathγ, gets suppressed.