3 papers
astro-ph.CO2026
Cosmological constraints on TeV-scale dark matter subcomponents decaying between recombination and reionisation
Markus R. Mosbech, Cristina Benso, Felix Kahlhoefer
The Dark Ages and the Cosmic Dawn are an untapped well of information about the particle physics properties of dark matter, which may become accessible with future radio telescopes…
hep-ph2025
Large neutrino mass in cosmology and keV sterile neutrino dark matter from a dark sector
Cristina Benso, Thomas Schwetz, Drona Vatsyayan
We consider an extended seesaw model which generates active neutrino masses via the usual type-I seesaw and leads to a large number of massless fermions as well as a sterile neutri…
hep-ph2025
Dark matter phase-in: producing feebly-interacting particles after a first-order phase transition
Cristina Benso, Felix Kahlhoefer, Henda Mansour
The freeze-in mechanism describes the out-of-equilibrium production of dark matter (DM) particles via feeble couplings or non-renormalisable interactions with large suppression sca…