3 papers
hep-ph2025
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…
hep-ph2025
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…
hep-ph2024
Anatomy of singlet-doublet dark matter relic: annihilation, co-annihilation, co-scattering, and freeze-in
Partha Kumar Paul, Sujit Kumar Sahoo, Narendra Sahu
The singlet-doublet vector-like fermion dark matter model has been extensively studied in the literature over the past decade. An important parameter in this model is the singlet-d…