Leptogenesis and dark matter detection in a TeV scale neutrino mass model with inverted mass hierarchy

Abstract

Realization of the inverted hierarchy is studied in the radiative neutrino mass model with an additional doublet, in which neutrino masses and dark matter could be induced from a common particle. We show that the sufficient baryon number asymmetry is generated through resonant leptogenesis even for the case with rather mild degeneracy among TeV scale right-handed neutrinos. We also discuss the relation between this neutrino mass generation mechanism and low energy experiments for the DM direct search, the neutrinoless double $\beta$ decay and so on.

25 pages, 5 figures, title changed, figures replaced and added, discussion on DM direct search extended, conclusions unchanged, published version

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