8 papers
Signature of GW from the Hidden Sector in light of the Recent LZ Event
Sujit Kumar Sahoo, Narendra Sahu, Vicky Singh Thounaojam
The LZ collaboration has recently reported a single nuclear-recoil event at keV, observed in a 2.84 tonne-year exposure with a local sign…
Dark Phoenix: dark matter relic from its own decay
Debasish Borah, Satyabrata Mahapatra, Indrajit Saha +2
We propose a novel mechanism for generating correct relic of dark matter (DM) which otherwise gets thermally overproduced from the conventional freeze-out mechanism. The mechanism,…
Anatomy of RHN DM relic in the vanilla scotogenic neutrino mass model
Sujit Kumar Sahoo, Narendra Sahu, Vicky Singh Thounaojam
The scotogeneic neutrino mass models are very popular choices to generate light neutrino masses via radiative mechanism. In these models, the particles running in the loop are dist…
Light thermal dark matter models in the light of DAMIC-M 2025 constraints
Debasish Borah, Satyabrata Mahapatra, Narendra Sahu +1
We study the viability of light thermal dark matter (DM) in sub-GeV mass range in view of the stringent new DAMIC-M limits on DM-electron scattering. Considering a Dirac fermion si…
Self-interacting dark matter with observable
Debasish Borah, Satyabrata Mahapatra, Narendra Sahu +1
We propose a GeV-scale self-interacting dark matter (SIDM) candidate within a dark gauged extension of the Standard Model (SM), addressing small-scale structure issues in…
New realisation of light thermal dark matter with enhanced detection prospects
Amit Adhikary, Debasish Borah, Satyabrata Mahapatra +3
Light dark matter (DM) with mass around the GeV scale faces weaker bounds from direct detection experiments. If DM couples strongly to a light mediator, it is possible to have obse…
Self Interacting Dark Matter and Dirac neutrinos via Lepton Quarticity
Satyabrata Mahapatra, Sujit Kumar Sahoo, Narendra Sahu +1
In this paper, we put forward a connection between the self-interacting dark matter and the Dirac nature of neutrinos. Our exploration involves a discrete symmet…
Self-interacting dark matter and the GRB221009A event
Debasish Borah, Satyabrata Mahapatra, Narendra Sahu +1
In this work, we explore the intriguing possibility of connecting self-interacting dark matter (SIDM) with the recently observed exceptionally bright and long-duration Gamma Ray Bu…