APEC Seminar (Astronomy - Particle Physics - Experimental Physics - Cosmology)

Speaker: Mikko Laine (ITP/ U Bern)
Title: Precision studies of GeV-scale leptogenesis and relation to dark matter
Date (JST): Wed, Oct 28, 2020, 16:00 - 17:00
Place: Zoom
Related File: 2569.pdf
Abstract: There has been recent interest in leptogenesis induced by "light" right-handed neutrinos, with masses in the GeV range. Apart from accounting for the observed baryon asymmetry, this scenario may yield lepton asymmetries much larger than the baryon asymmetry. A possible consequence of the latter could be keV-scale sterile neutrino dark matter, produced through the resonantly enhanced Shi-Fuller mechanism. Making use of a "complete" theoretical framework, which tracks both helicity states of the right-handed neutrinos as well as their kinetic non-equilibrium, and solving numerically a set of non-linear evolution equations, we explore to what extent such a minimal scenario could represent a viable explanation for dark matter and baryogenesis.