16 citations · 49 across the 17 of their papers we have counts for
4 papers · 1 filter
Exothermic dark-photon dark matter and the LZ high-recoil event: finite-reheating constraints
Kuldeep Deka
An excited dark-matter state can produce a high-energy nuclear recoil by releasing its mass splitting in a collision. Motivated by the ~keV LUX--ZEPLIN candidate, we study fre…
Reheating the FCC: Probing Early Matter Domination with Long-Lived Particles
Nicolás Bernal, Giovanna Cottin, Kuldeep Deka +1
We study a GeV-scale Higgs-portal scalar that can dominate the early Universe and later decay into Standard Model states, ending an early matter-dominated era. Ordinary cosmic…
Freeze-in and ultra-relativistic freeze-out during general reheating scenarios
Kuldeep Deka
The dark-matter relic abundance can depend sensitively on the thermal history before radiation domination. We derive a general analytic framework for dark-matter production from th…
Sterile neutrino Dark Matter in the minimal Dirac Seesaw
J. Adhikary, A. Batra, K. Deka +1
We study sterile neutrino dark matter in a minimal Type-I Dirac seesaw framework where the states responsible for generating Dirac neutrino masses at tree level can be viable dark…