2005/02/28 by Katri Huitu, Jari Laamanen, P. N. Pandita +2 · 30 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Boson #Gaugino #Grand Unified Theory #Higgs boson #Neutralino #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Supersymmetry #hep-ph
paper · pdf · doi:10.1103/physrevd.72.055013
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 72(5) (American Physical Society) · 24 pages, uses psrfrag. Typo in Eq. (15) corrected. Added more detailed discussion about non-universality in SUSY SU(5). Parameter space and RGE loop level indicated more clearly. Added a few references. Version to be published in Phys. Rev. D
arxiv created 2005/09/13 · openalex publication_date 2005/09/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Grand unified theories can lead to nonuniversal boundary conditions for the gaugino masses at the unification scale. We consider the implications of such nonuniversal boundary conditions for the composition of the lightest neutralino as well as for the upper bound on its mass in the simplest supersymmetric grand unified theory based on the SU(5) gauge group. We derive sum rules for neutralino and chargino masses in different representations of SU(5) which lead to different nonuniversal boundary conditions for the gaugino masses at the unification scale. We also consider the phenomenological implications of the nonuniversal gaugino masses arising from a grand unified theory in the context of large hadron collider. In particular we investigate the detection of heavy neutral Higgs bosons H0, A0from H0, A0\ensuremath→\stackrel\texttildelow\ensuremathχ20\stackrel\texttildelow\ensuremathχ20\ensuremath→4l and study the possibilities of detecting the neutral Higgs bosons in cascade decays, including the decays \stackrel\texttildelow\ensuremathχ20\ensuremath→h0(H0,A0)\stackrel\texttildelow\ensuremathχ10\ensuremath→bb\stackrel\texttildelow\ensuremathχ10.