31 citations · 93 across the 21 of their papers we have counts for
8 papers · 1 filter
Cosmological Probes of Lepton Parity Freeze-in Dark Matter: & Gravitational Waves
Ernest Ma, Partha Kumar Paul, Narendra Sahu
In the canonical type-I seesaw mechanism for neutrino masses, a residual symmetry known as lepton parity: , remains preserved. Introducing a Majorana fermion with even…
Gravitational Wave Probe of Singlet-Doublet Dark Matter Induced Radiative Neutrino Mass
Ujjal Kumar Dey, Santu Kumar Manna, Partha Kumar Paul +2
We investigate an one loop radiative neutrino mass model, where the loop particles, notably a singlet fermion (), a doublet fermion () and three generations of singlet scalar…
Impact of conversion-driven processes on singlet-doublet Majorana dark matter relic
Partha Kumar Paul, Sujit Kumar Sahoo, Narendra Sahu
The singlet-doublet dark matter model offers a rich framework for exploring the nature of dark matter (DM) through its unique fermion structure. In this model, the important parame…
Revisiting the limits on dark matter annihilation cross-section and decay lifetime in light of electron and positron fluxes
Nagisa Hiroshima, Kazunori Kohri, Partha Kumar Paul +1
We revisit the upper bound on the annihilation cross-section, of a stable dark matter (DM) of mass GeV by considering five different channels: $W^+…
Lepton parity dark matter and naturally unstable domain walls
Ernest Ma, Partha Kumar Paul, Narendra Sahu
We propose a simple and predictive setup that connects neutrino masses, dark matter (DM), and gravitational waves. A minimal lepton parity DM scenario is considered where the resid…
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…
Does thermal leptogenesis in a canonical seesaw rely on initial memory?
Partha Kumar Paul, Narendra Sahu, Shashwat Sharma
It is a common lore that in thermal leptogenesis within the type-I seesaw framework and a hierarchical spectrum of heavy right-handed neutrinos (RHNs), the CP-violating, out-of-equ…
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…