Speaker
Rin Takada
Description
We present a unified, gauge-invariant EFT analysis of low-scale electromagnetic leptogenesis sourced by CP-violating neutrino–gauge dipole interactions. We first match UV-complete models onto the dimension-six effective operator, and evaluate the decay widths, CP asymmetries, and the corresponding transport equations in the electroweak-broken phase. We then show that the suppression arising from the competition between the CP asymmetry and washout can be overcome by the resonant enhancement induced by self-energy resummation in a quasi-degenerate heavy-neutrino spectrum.
