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- Indian Institute of Technology GandhinagarIN282 papers
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19 papers · 2 filters
Renormalization group evolution of neutrino masses and mixing in the Type-III seesaw mechanism
Joydeep Chakrabortty, Amol Dighe, Srubabati Goswami +1
We consider the standard model extended by heavy right handed fermions transforming as triplets under SU(2), which generate neutrino masses through the Type-III seesaw mechanis…
Neutrino Dark Energy in Grand Unified Theories
Jitesh R. Bhatt, Pei-Hong Gu, Utpal Sarkar +1
We studied a left-right symmetric model that can accommodate the neutrino dark energy (\nd) proposal. Type III seesaw mechanism is implemented to give masses to the neutrinos. Afte…
Gravitational correction to SU(5) gauge coupling unification
Jitesh R. Bhatt, Sudhanwa Patra, Utpal Sarkar
The gravitational corrections to the gauge coupling constants of abelian and non-abelian gauge theories has been shown to diverge quadratically. Since this result will have interes…
Pathways to testable leptogenesis
Pei-Hong Gu, Utpal Sarkar
In the conventional seesaw models of neutrino masses, leptogenesis occurs at a very high scale. Three approaches have been discussed in the literature to lower the scale of leptoge…
Neutrino masses, leptogenesis and dark matter in hybrid seesaw
Pei-Hong Gu, M. Hirsch, Utpal Sarkar +1
We suggest a hybrid seesaw model where relatively ``light''right-handed neutrinos give no contribution to the neutrino mass matrix due to a special symmetry. This allows their Yuka…
Hybrid textures in minimal seesaw mass matrices
Srubabati Goswami, Subrata Khan, Atsushi Watanabe
In the context of minimal seesaw framework, we study the implications of Dirac and Majorana mass matrices in which two rigid properties coexist, namely, equalities among mass matri…