TY  - JOUR
AU  - Vatsyayan, D.
AU  - Goswami, S.
PY  - 2023
DA  - 2023//
TI  - Lowering the scale of fermion triplet leptogenesis with two Higgs doublets
T2  - Phys. Rev. D
JO  - Physical Review D
SP  - 035014
EP  - 9pp
VL  - 107
IS  - 3
PB  - Amer Physical Soc
AB  - In this paper, we consider the possibility of generating the observed baryon asymmetry of the Universe via leptogenesis in the context of a triplet fermion-mediated type-III seesaw model of neutrino mass. With a hierarchical spectrum of the additional fermions, the lower bound on the lightest triplet mass is similar to 1010 GeV for successful leptogenesis, a couple of orders higher than that of the type-I case. We investigate the possibility of lowering this bound in the framework of two-Higgs-doublet models. We find that the bounds can be lowered down to 107 GeV for a hierarchical spectrum. If we include the flavor effects, then a further lowering by one order of magnitude is possible. We also discuss if such lowering can be compatible with the naturalness bounds on the triplet mass.
SN  - 2470-0010
UR  - https://arxiv.org/abs/2208.12011
UR  - https://doi.org/10.1103/PhysRevD.107.035014
DO  - 10.1103/PhysRevD.107.035014
LA  - English
N1  - WOS:000982166600007
ID  - Vatsyayan+Goswami2023
ER  -