540 citations · 1.8k across the 21 of their papers we have counts for
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hep-ph2021
Cosmological constraints on the decay of heavy relics into neutrinos
Thomas Hambye, Marco Hufnagel, Matteo Lucca
A massive particle decaying into neutrinos in the early Universe is known to be less constrained than if it was decaying into other standard model particles. However, even if the d…
hep-ph2020★ 21 cited
Dark matter as a heavy thermal hot relic
Thomas Hambye, Matteo Lucca, Laurent Vanderheyden
If, during the early Universe epoch, the dark matter particle thermalizes in a hidden sector which does not thermalize with the Standard Model thermal bath, its relativistic therma…