Speaker
Björn Garbrecht
(TUM)
Description
Bjoern will review recent work on the production of sterile neutrinos in the hot Universe without and with CP violation (the latter case being relevant for Leptogenesis). In the case of massive neutrinos, there are soft and collinear divergences due to radiation of weak gauge bosons in individual amplitudes, which cancel when calculating the inclusive production rates. These techniques may as well be of relevance for the production of Dark Matter particles.