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Supersymmetric QCD effects on neutralino dark matter annihilation beyond scalar or gaugino mass unification
Herrmann B., Klasen M., Kovarik K.
Physical Review D 80 (2009) 085025 - http://hal.in2p3.fr/in2p3-00401858
Physique/Physique des Hautes Energies - Phénoménologie
Supersymmetric QCD effects on neutralino dark matter annihilation beyond scalar or gaugino mass unification
B. Herrmann, M. Klasen1, K. Kovarik1
1 :  LPSC - Laboratoire de Physique Subatomique et de Cosmologie
http://lpsc.in2p3.fr
CNRS : UMR5821 – IN2P3 – Université Joseph Fourier - Grenoble I – Institut Polytechnique de Grenoble - Grenoble Institute of Technology
53 avenue des Martyrs - 38026 Grenoble Cedex
France
We describe in detail our calculation of the full supersymmetric (SUSY) 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^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.

Articles dans des revues sans comité de lecture
2009
Physical Review D (Phys. Rev. D)
Publisher American Physical Society
ISSN 1550-7998 (eISSN : 1550-2368)
80
085025

LPSC0982
19 pages
Lien vers le texte intégral : 
http://fr.arXiv.org/abs/0907.0030