Electroweak Resonant Leptogenesis in the Singlet Majoron Model

Understand

We study resonant leptogenesis at the electroweak phase transition in the singlet Majoron model with right-handed neutrinos.

• We consider a scenario, where the SM gauge group and the lepton number break down spontaneously during a second-order electroweak phase transition.
• We calculate the flavour- and temperature-dependent leptonic asymmetries, by including the novel contributions from the transverse polarisations of the W+/- and Z bosons.
• The required resummation of the gauge-dependent off-shell heavy-neutrino self-energies is consistently treated within the gauge-invariant framework of the Pinch Technique.