Higgsino dark matter in a supergravity model with nonuniversal gaugino masses

2003/04/30 by Utpal Chattopadhyay, D. P. Roy · 10 citations
Physics and Astronomy · #Astrophysics #Cold dark matter #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark energy #Dark matter #Gaugino #Higgsino #Hot dark matter #Lightest Supersymmetric Particle #Neutralino #Particle physics #Particle physics theoretical and experimental studies #Physics #Supergravity #Supersymmetry #Warm dark matter #hep-ph

paper · pdf · doi:10.1103/physrevd.68.033010

published as Phys.Rev. D68 (2003) 033010 · Version to appear in Phys. Rev. D. A few references added in the bibliography and a comment added in Section 2. LaTex, 16 pages, 4 figures

arxiv created 2003/06/20 · openalex publication_date 2003/08/14 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We study a specific SUGRA model with nonuniversal gaugino masses as an alternative to the minimal SUGRA model in the context of supersymmetric dark matter. The lightest supersymmetric particle in this model turns out to be a Higgsino-dominated instead of a B-ino-dominated lightest neutralino. The thermal relic density of this Higgsino dark matter is somewhat lower than the cosmologically favored range, which means that it may be only a subdominant component of cold dark matter. Nonetheless, it predicts favorable rates of indirect detection, which can be seen in square-km-size neutrino telescopes.

Citations

• Particle candidates for dark matter: a case for (dominant or subdominant) relic neutralinos
• Dark Matter Detection Rates In SUGRA Models
• SUSY Dark Matter: Closing The Parameter Space
• Updated Constraints on the Minimal Supergravity Model
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Preliminary Maps and Basic Results
• Indirect detection of a subdominant density component of cold dark matter
• Like-sign dilepton signature for gluino production at the CERN LHC including top quark and Higgs boson effects
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• Review of particle properties
• Review of Particle Physics

Cited by

• Exploring non-holomorphic soft terms in the framework of gauge mediated supersymmetry breaking
• A stronger case for superunification post Higgs boson discovery
• Phenomenology of nonuniversal gaugino masses in supersymmetric grand unified theories
• Compressed supersymmetry and natural neutralino dark matter from top squark-mediated annihilation to top quarks
• Higgsino dark matter in nonuniversal gaugino mass models
• Searching for dark matter—Theoretical rates and exclusion plots due to the spin
• Modular invariant soft breaking, WMAP, dark matter, and sparticle mass limits
• Higgs decays in supersymmetric models with light neutralinos
• The role of ionization electrons in direct neutralino detection
• Lepton Flavor Violation, Neutralino Dark Matter and the Reach of the LHC