17 papers
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^+…
Cogenesis of visible and dark matter in type-I Dirac seesaw
Debasish Borah, Partha Kumar Paul, Narendra Sahu
We propose a novel cogenesis framework based on the type-I Dirac seesaw mechanism. The minimal type-I Dirac seesaw with three heavy vector-like fermions , one singlet scalar $…
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 scal…
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…
Probing Dynamical Inverse Seesaw with Low-frequency Gravitational Waves
Debasish Borah, Sounak Dutta, Partha Kumar Paul +2
We study the possibility of probing the dynamical inverse seesaw mechanism for the origin of light neutrino masses via the detection of stochastic gravitational waves (GW) in the l…
Baryon-dark matter coincidence in Randall-Sundrum Model
Basabendu Barman, Ashmita Das, Partha Kumar Paul +2
Within the framework of the extra-dimensional Randall-Sundrum set-up, we investigate the freeze-in production of Standard Model (SM) gauge-singlet scalar, fermionic, and massive ve…