Coannihilation with a chargino and gauge boson pair production at one-loop

Understand

We present a complete calculation of the electroweak one-loop corrections to the relic density within the MSSM framework.

• In the context of the neutralino as dark matter candidate, we review different scenarios of annihilation and coannihilation with a chargino.
• In particular we investigate predictions for the annihilation into gauge boson pairs for different kinds of neutralino: bino-, wino- and higgsino-like.
• We present some interesting effects which are not present at tree-level and show up at one-loop.