518 citations · 3.6k across the 129 of their papers we have counts for
14 papers · 1 filter
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…
Importance of neutrinoless double beta decay
Utpal Sarkar
A natural explanation for the smallness of the neutrino mass requires them to be Majorana particles violating lepton number by two units. Since lepton number violation can have sev…
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…
Realistic Neutrinogenesis with Radiative Vertex Correction
Pei-Hong Gu, Hong-Jian He, Utpal Sarkar
We propose a new model for naturally light Dirac neutrinos and explain the baryon asymmetry of the universe through neutrinogenesis. We extend the standard model with a real single…
Dirac Neutrinos, Dark Energy and Baryon Asymmetry
Pei-Hong Gu, Hong-Jian He, Utpal Sarkar
We explore a new origin of neutrino dark energy and baryon asymmetry in the universe. The neutrinos acquire small masses through the Dirac seesaw mechanism. The pseudo-Nambu-Goldst…
Leptogenesis, Dark Matter and Higgs Phenomenology at TeV
Pei-Hong Gu, Utpal Sarkar
We propose an interesting model of neutrino masses to realize leptogenesis and dark matter at the TeV scale. A real scalar is introduced to naturally realize the Majorana masses of…
Revelations of the E_6/U(1)_N Model: Two-Loop Neutrino Mass and Dark Matter
Ernest Ma, Utpal Sarkar
The E_6/U(1)_N gauge extension of the Supersymmetric Standard Model, first proposed by Ma, is shown to have exactly the requisite ingredients to realize the important new idea that…
Neutrino Dark Energy and Baryon Asymmetry from Higgs Sector
Pei-Hong Gu, Hong-Jian He, Utpal Sarkar
We propose a new model to explain the neutrino masses, the dark energy and the baryon asymmetry altogether. In this model, neutrinos naturally acquire small Majorana masses via typ…
Low Intermediate Scales for Leptogenesis in Supersymmetric SO(10) Grand Unified Theories
Swarup Kumar Majee, Mina K. Parida, Amitava Raychaudhuri +1
A low intermediate scale within minimal supersymmetric SO(10) GUTs is a desirable feature to accommodate leptogenesis. We explore this possibility in models where the intermediate…
Predictive model for dark matter, dark energy, neutrino masses and leptogenesis at the TeV scale
Narendra Sahu, Utpal Sarkar
We propose a new mechanism of TeV scale leptogenesis where the chemical potential of right-handed electron is passed on to the asymmetry of the Universe in the presence of sp…