3 papers
hep-ph2026
Constraining Gravitational Dark Matter with LHAASO and Fermi-LAT
Basabendu Barman, Arindam Das, Prantik Sarmah +1
We use diffuse Galactic high energy gamma ray data from LHAASO and Fermi-LAT to constrain gravitationally produced decaying dark matter (DM). Focusing on four benchmark candidates:…
hep-ph2026
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…
hep-ph2026
Freeze-in production of scalaron dark matter in gravity
Basabendu Barman, Ashmita Das, Rakesh Kumar SivaKumar +1
We demonstrate that the scalaron, a scalar degree of freedom, emerging from the theory of gravity, can account for the observed dark matter (DM) abundance if its mass is aro…