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- Indian Institute of Technology GandhinagarIN282 papers
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22 papers · 2 filters
B-L Conserved Baryogenesis
Pei-Hong Gu, Utpal Sarkar
In the presence of anomaly induced sphaleron process, only a B-L asymmetry can be partially converted to the baryon asymmetry while any B+L asymmetry would be completely erased. Th…
Leptogenesis, Dark Energy, Dark Matter and the neutrinos
Utpal Sarkar
In this review we discuss how the models of neutrino masses can accommodate solutions to the problem of matter-antimatter asymmetry in the universe, dark energy or cosmological con…
Radiative Neutrino Mass, Dark Matter and Leptogenesis
Pei-Hong Gu, Utpal Sarkar
We propose an extension of the standard model, in which neutrinos are Dirac particles and their tiny masses originate from a one-loop radiative diagram. The new fields required by…
Type-II Seesaw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter
John McDonald, Narendra Sahu, Utpal Sarkar
We propose an extension of the standard model with a B-L global symmetry that is broken softly at the TeV scale. The neutrinos acquire masses through a type-II seesaw while the lep…
Left-Right Symmetric Model of Neutrino Dark Energy
Jitesh R. Bhatt, Pei-Hong Gu, Utpal Sarkar +1
We implemented the neutrino dark energy proposal in a left-right symmetric model. Unlike earlier models of mass varying neutrinos, in the present model the mass parameter that depe…
SO(10) GUT Baryogenesis
Pei-Hong Gu, Utpal Sarkar
Baryogenesis, through the decays of heavy bosons, was considered to be one of the major successes of the grand unified theories (GUTs). It was then realized that the sphaleron proc…