New Solution for Neutrino Masses and Leptogenesis in Adjoint SU(5)

Details New Solution for Neutrino Masses and Leptogenesis in Adjoint SU(5) New Solution for Neutrino Masses and Leptogenesis in Adjoint SU(5)

2011-05-23

arxiv.org/abs/1105.4546v3

JHEP 1107:102,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 4 figures; references added and typos fixed

Scientific paper

10.1007/JHEP07(2011)102

We investigate baryogenesis via leptogenesis and generation of neutrino masses and mixings through the Type I plus Type III seesaw plus an one-loop mechanism in the context of Renormalizable Adjoint SU(5) theory. One light neutrino remains massless, because the contributions of three heavy Majorana fermions \rho_0, \rho_3 and \rho_8 to the neutrino mass matrix are not linearly independent. However none of these heavy fermions is decoupled from the generation of neutrino masses. This opens a new range in parameter space for successful leptogenesis, in particular, allows for inverted hierarchy of the neutrino masses.

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