Supersymmetric QCD effects on neutralino dark matter annihilation beyond scalar or gaugino mass unification

Journal Article · Thu Oct 15 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.80.085025· OSTI ID:21325415

Herrmann, Bjoern; Klasen, Michael; Kovarik, Karol ^[1]

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1. Institut fuer Theoretische Physik und Astrophysik, Universitaet Wuerzburg, Am Hubland, D-97074 Wuerzburg (Germany)

We describe in detail our calculation of the full supersymmetric QCD corrections to neutralino annihilation into heavy quarks and extend our numerical analysis of the resulting dark matter relic density to scenarios without scalar or gaugino mass unification. In these scenarios, the final state is often composed of top quarks and the annihilation proceeds through Z{sup 0}-boson or scalar top-quark exchanges. The impact of the corrections is again shown to be sizable, so that they must be taken into account systematically in global analyses of the supersymmetry parameter space.

• OSTI ID: 21325415
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 8 Vol. 80; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANNIHILATION
B QUARKS
BOSONS
C QUARKS
COMPUTERIZED SIMULATION
CORRECTIONS
DENSITY
GLOBAL ANALYSIS
MASS
NONLUMINOUS MATTER
NUMERICAL ANALYSIS
QUANTUM CHROMODYNAMICS
SUPERSYMMETRY
T QUARKS
Z NEUTRAL BOSONS