2 papers
hep-ph2024
Freeze-in at stronger coupling
Catarina Cosme, Francesco Costa, Oleg Lebedev
Predictivity of many non-thermal dark matter (DM) models is marred by the gravitational production background. This problem is ameliorated in models with lower reheating temperatur…
hep-ph2024
Neutrino mixing sum rules and the Littlest Seesaw
Francesco Costa, Stephen F. King
In this work, we study the neutrino mixing sum rules arising from discrete symmetries, and the class of Littlest Seesaw (LS) neutrino models. These symmetry based approaches all of…