Baryogenesis via leptogenesis

Abstract

We discuss how leptogenesis can explain the observed baryon asymmetry and summarize attempts of testing leptogenesis. We first perform estimates and discuss the main physics, and later outline the techniques that allow to perform precise computations.

Comments: 20 pages. Lectures given at LesHouches 2005 + some original material about "flavored leptogenesis" and "DM/leptogenesis unification"