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hep-ph2024
On the family discrimination in 331-model
Katri Huitu, Niko Koivunen, Timo Kärkkäinen +1
In the so-called 331-models the gauge anomalies cancel only if there are three generations of fermions. This requires one of the quark generations to be in a different representati…
hep-ph2024
Probing sterile neutrino freeze-in at stronger coupling
Niko Koivunen, Oleg Lebedev, Martti Raidal
The regime of dark matter (DM) freeze-in at stronger coupling interpolates between freeze-in and freeze-out. It relies on Boltzmann-suppressed dark matter production, implying that…