Axino dark matter with low reheating temperature

Understand

We examine axino dark matter in the regime of a low reheating temperature T_R after inflation and taking into account that reheating is a non-instantaneous process.

• This can have a significant effect on the dark matter abundance, mainly due to entropy production in inflaton decays.
• We study both thermal and non-thermal production of axinos in the context of the MSSM with ten free parameters.
• We identify the ranges of the axino mass and the reheating temperature allowed by the LHC and other particle physics data in different models of axino interactions.