Relic density at one-loop with gauge boson pair production

Journal Article · Fri Jan 01 04:00:00 EST 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.015005· OSTI ID:21408993

Baro, N ^[1]; Boudjema, F; Chalons, G; Sun, Hao ^[2]

---

1. Institut fuer Theoretische Physik E, RWTH Aachen University, D-52056 Aachen (Germany)
2. LAPTH, Universite de Savoie, CNRS, BP 110, F-74941 Annecy-le-Vieux Cedex (France)

We have computed the full one-loop corrections (electroweak as well as QCD) to processes contributing to the relic density of dark matter in the minimal supersymmetric standard model where the lightest supersymmetric particle is the lightest neutralino. We cover scenarios where the most important channels are those with gauge boson pair production. This includes the case of a bino with some wino admixture, a Higgsino and a wino. In this paper we specialize to the case of light dark matter much below the TeV scale. The corrections can have a non-negligible impact on the predictions and should be taken into account in view of the present and forthcoming increasing precision on the relic density measurements. Our calculations are made with the help of SLOOPS, an automatic tool for the calculation of one-loop processes in the minimal supersymmetric standard model. The renormalization scheme dependence of the results as concerns tan{beta} is studied.

• OSTI ID: 21408993
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
COMPUTERIZED SIMULATION
CORRECTIONS
DENSITY
ELEMENTARY PARTICLES
ENERGY RANGE
FIELD THEORIES
FORECASTING
GRAND UNIFIED THEORY
INTERACTIONS
MATHEMATICAL MODELS
MATTER
NONLUMINOUS MATTER
PAIR PRODUCTION
PARTICLE MODELS
PARTICLE PRODUCTION
PHYSICAL PROPERTIES
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
RENORMALIZATION
SIMULATION
SPARTICLES
STANDARD MODEL
SUPERSYMMETRY
SYMMETRY
TEV RANGE
UNIFIED GAUGE MODELS