7 papers
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…
Verifiable type-III seesaw and dark matter in a gauged symmetric model
Satyabrata Mahapatra, Partha Kumar Paul, Narendra Sahu +1
We propose a new extension of the Standard Model that incorporates a gauged \( U(1)_{\rm B-L} \) symmetry and the type-III seesaw mechanism to explain neutrino mass generation and…
Super heavy dark matter origin of the PeV neutrino event: KM3-230213A
Kazunori Kohri, Partha Kumar Paul, Narendra Sahu
The recent observation of the ultrahigh-energy neutrino event KM3-230213A by the KM3NeT experiment offers a compelling avenue to explore physics beyond the Standard Model (SM). In…
Effective theory of light Dirac neutrino portal dark matter with observable
Debasish Borah, Satyabrata Mahapatra, Dibyendu Nanda +2
We study the possibility of light Dirac neutrino portal dark matter (DM) in an effective field theory setup. Dirac nature of light neutrino automatically includes its right chiral…