299 citations · 868 across the 43 of their papers we have counts for
8 papers · 1 filter
Gravitational wave signatures of PBH-generated baryon-dark matter coincidence
Basabendu Barman, Debasish Borah, Suruj Jyoti Das +1
We propose a new way of probing non-thermal origin of baryon asymmetry of universe (BAU) and dark matter (DM) from evaporating primordial black holes (PBH) via stochastic gravitati…
A Predictive Model
George Lazarides, Rinku Maji, Rishav Roshan +1
We discuss some testable predictions of a non-supersymmetric model supplemented by a Peccei-Quinn symmetry. We utilize a symmetry breaking pattern of that yields…
Probing high scale seesaw and PBH generated dark matter via gravitational waves with multiple tilts
Debasish Borah, Suruj Jyoti Das, Rishav Roshan
We propose a scenario where a high scale seesaw origin of light neutrino mass and gravitational dark matter (DM) in MeV-TeV ballpark originating from primordial black hole (PBH) ev…
Top-philic Dark Matter in a Hybrid KSVZ axion framework
Anupam Ghosh, Partha Konar, Rishav Roshan
We explore a two-component dark matter scenario in an extended Kim-Shifman-Vainshtein-Zakharov (KSVZ) axion framework. This hybrid setup incorporates an extra complex sin…
Effects of Reheating on Charged Lepton Yukawa Equilibration and Leptogenesis
Arghyajit Datta, Rishav Roshan, Arunansu Sil
We show that the process of non-instantaneous reheating during the post-inflationary period can have a sizable impact on the charged lepton Yukawa equilibration temperature in the…
Thermally corrected masses and freeze-in dark matter: a case study
Nabarun Chakrabarty, Partha Konar, Rishav Roshan and +1
If coupled \emph{feebly} to the Standard Model bath, a dark matter can evade the severe constraints from the direct search experiments. At the same time, such interactions help pro…
Heavier boson, dark matter and gravitational waves from strings in an axion model
George Lazarides, Rinku Maji, Rishav Roshan +1
Inspired by the recent determination of the -boson mass by the CDF collaboration, we revisit an axion model in which a scalar triplet field with zero hypercha…
Cogenesis of Baryon Asymmetry and Gravitational Dark Matter from Primordial Black Holes
Basabendu Barman, Debasish Borah, Suruj Jyoti Das +1
We propose a scenario where dark matter (DM) with a wide mass range from a few keV to PeV can be produced solely from evaporating primordial black holes (PBH), while being consiste…