Speaker
Mr
Guillaume Chalons
(LAPTH)
Description
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 neutralino is a bino-higgsino one with mass around
500 GeV and an almost pure wino with a mass of order 2 TeV. In the wino case the radiative
corrections exhibit important effects occurring in the non-relativistic regime as well as the ultra-
relativistic one. This is due on the one hand to Sommerfeld Electroweak enhancement and on
the other hand to Sudakov double logarithms corrections. 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.
Primary author
Mr
Guillaume Chalons
(LAPTH)
