Scalar Triplet Flavor Leptogenesis with Dark Matter

Abstract

We investigate a simple variant of type-II seesaw, responsible for neutrino mass generation, where the particle spectrum is extended with one singlet right-handed neutrino and an inert Higgs doublet, both odd under an additional Z 2 symmetry. While the role of the dark matter is played by the lightest neutral component of the inert Higgs doublet, its interaction with the Standard Model lepton doublets and the right-handed neutrino turns out to be crucial in generating the correct baryon abundance of the Universe through flavored leptogenesis from the decay of the SU (2) L scalar triplet, involved in type-II framework.

Freeze-in dark matter through forbidden channel in U(1) B-L

“…In addition, the B − L gauge boson also becomes massive after the breaking of B − L symmetry. It is interesting to point out that the B − L setup can provide a common solution to three of the most important issues JCAP03(2022)021 of present-day particle physics and cosmology, i.e., the non-zero neutrino mass [9,[54][55][56][57][58], baryogenesis via leptogenesis [9,[59][60][61][62][63][64] from the decay of heavier RHNs and dark matter (WIMP/FIMP). The WIMP type DM in the context of the B − L extension has been thoroughly studied [6,65,66].…”