3 papers
hep-ph2026
Exploring non-equilibrium effects in sequential freeze-in
Shiuli Chatterjee, Andrzej Hryczuk
Freeze-in of multi-component dark sectors is governed not only by the interaction with the thermal plasma, but also by their internal dynamics. Full thermalisation within the dark…
hep-ph2025
Conversions in two-component dark sectors: a phase space level analysis
Shiuli Chatterjee, Andrzej Hryczuk
Conversions between the states in the dark sector affect not only their number densities but also their momentum distributions. In this work we study a phenomenologically motivated…
hep-ph2021
Freezing In with Lepton Flavored Fermions
Giancarlo D'Ambrosio, Shiuli Chatterjee, Ranjan Laha +1
Dark, chiral fermions carrying lepton flavor quantum numbers are natural candidates for freeze-in. Small couplings with the Standard Model fermions of the order of lepton Yukawas a…