Top-squark-mediated annihilation scenario and direct detection of dark matter in compressed supersymmetry

Journal Article · Thu Nov 01 04:00:00 EDT 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.095005· OSTI ID:21032600

Martin, Stephen P ^[1]

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1. Department of Physics, Northern Illinois University, DeKalb, Illinois 60115, USA and Fermi National Accelerator Laboratory, P.O. Box 500, Batavia, Illinois 60510 (United States)

Top-squark-mediated annihilation of b-ino-like neutralinos to top-antitop pairs can play the dominant role in obtaining a thermal relic dark matter abundance in agreement with observations. In a previous paper, it was argued that this can occur naturally in models of compressed supersymmetry, which feature a running gluino mass parameter that is substantially smaller than the W-ino mass parameter at the scale of apparent gauge coupling unification. Here I study in some more detail the parameter space in which this is viable, and compare to other scenarios for obtaining the observed dark matter density. I then study the possibility of detecting the dark matter directly in future experiments. The prospects are consistently very promising for a wide variety of model parameters within this scenario.

• OSTI ID: 21032600
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 9 Vol. 76; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
COMPARATIVE EVALUATIONS
COUPLING
NONLUMINOUS MATTER
REST MASS
SPACE
SPARTICLES
STANDARD MODEL
SUPERSYMMETRY