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.

29 pages, 7 figures, 2 tables, version published in PRD

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• Two dark matter candidates in a doublet-triplet Higgs model
• Probing leptogenesis and the minimal neutrino seesaw mechanism through gravitational waves
• Leptogenesis assisted by scalar decays
• Freeze-In Dark Matter and Leptogenesis: a ${\psi }^{\prime }$SM route