Joint cosmic microwave background and big bang nucleosynthesis constraints on light dark sectors with dark radiation

C Giovanetti, M Lisanti, H Liu, JT Ruderman - Physical review letters, 2022 - APS
Dark sectors provide a compelling theoretical framework for thermally producing sub-GeV
dark matter, and motivate an expansive new accelerator and direct-detection experimental …

Minimal mass of thermal dark matter and the viability of millicharged particles affecting 21-cm cosmology

X Chu, J Pradler - Physical Review D, 2024 - APS
Thermal freeze-out offers an attractive explanation of the dark matter density free from fine-
tuning of initial conditions. For dark matter with a mass below tens of MeV, photons …