Relic density at one-loop with gauge boson pair production

Details Relic density at one-loop with gauge boson pair production Relic density at one-loop with gauge boson pair production

2009-10-19

arxiv.org/abs/0910.3293v3

Phys.Rev.D81:015005,2010

Physics

High Energy Physics

High Energy Physics - Phenomenology

25 pages, 10 figures, Citations added

Scientific paper

10.1103/PhysRevD.81.015005

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 MSSM where the LSP 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 specialise 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 MSSM. The renormalisation scheme dependence of the results as concerns $\tgb$ is studied.

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