7 papers · 1 filter
Cogenesis of baryon and lepton number asymmetries matching the EMPRESS Data
Kyu Jung Bae, Arghyajit Datta, Rinku Maji +1
We show that a simple supersymmetric extension of the standard model can explain simultaneously the large electron neutrino asymmetry hinted by the recent EMPRESS data…
Probing Right Handed Neutrino assisted Reheating with Gravitational Waves and Leptogenesis
Arghyajit Datta, Shaaban Khalil, Rajat Kumar Mandal +1
We investigate a non-instantaneous reheating period in the early Universe, where the inflaton field decays exclusively to right-handed neutrinos (RHNs). The subsequent decay of the…
Is leptogenesis during gravitational reheating flavourful?
Basabendu Barman, Arghyajit Datta, Md Riajul Haque
We examine the impact of charged lepton Yukawa equilibration on leptogenesis during gravitational reheating. During the post-inflationary era, the inflaton field is assumed to osci…
Spontaneous Leptogenesis with sub-GeV Axion Like Particles
Arghyajit Datta, Soumen Kumar Manna, Arunansu Sil
A derivative coupling of an axion like particle (ALP) with a B-L current may lead to the baryon asymmetry of the universe via spontaneous leptogenesis provided a lepton number brea…
Leptogenesis from a Phase Transition in a Dynamical Vacuum
Dipendu Bhandari, Arghyajit Datta, Arunansu Sil
We show that a phase transition may take place in the early Universe at a temperature via a Standard Model singlet scalar field which happens to couple to right handed neutri…
Probing Leptogenesis through Gravitational Waves
Arghyajit Datta, Arunansu Sil
We propose that a gravitational wave can be generated during leptogenesis in the early Universe which occurs when a heavy right handed neutrino decays out of equilibrium. Such a gr…