Flavoured resonant leptogenesis at sub-TeV scales

We consider sub-TeV scale flavoured resonant leptogenesis within the minimal type-I seesaw scenario with two right-handed singlet neutrinos N1,2forming a pseudo-Dirac pair, concentrating on the case of masses of the pseudo-Dirac pair having values M1,2100 GeV. The case when the CP violating asymme-tries in the individual lepton charges Ll, l=e, μ, τ, and in the total lepton charge Lof the Universe are generated in 1 ↔2 decay processes is investigated. We show that successful leptogenesis is possible for M1,2lying in the interval M1,2=(0.3 −100)GeV. Our results show also, in particular, that for vanishing initial N1,2abundance, flavour effects can play an important role in the generation of the baryon asymme-try, leading to an enhancement of the asymmetry by a factor up to ∼300 with respect to the “unflavoured” leptogenesis scenario