Flavor effects in leptogenesis

Understand

Flavor effects can have a significant impact on the final estimate of the lepton (and therefore baryon) asymmetry in scenarios of leptogenesis.

• It is therefore necessary to account fully for this flavor dynamics in the relevant transport equations that describe the production (and washout) of the asymmetry.
• Doing so can both open up and restrict viable regions of parameter space relative to the predictions of more approximate calculations.
• In this review, we identify the regimes in which flavor effects can be relevant and illustrate their impact in a number of phenomenological models.