XIV Latin American Symposium on High Energy Physics

Leptonic CP violation from a vector-like lepton

14 Nov 2022, 14:45

15m

Calderón de la Barca theater (USFQ main campus)

Parallel oral presentation Flavour physics and CP violation Parallel session A

Speaker

Adriano Cherchiglia (Universidade Estadual de Campinas)

Description

Leptonic CP violation is yet to be confirmed as an additional source of CP violation in fundamental interactions.
We study the case where leptonic CP violation is spontaneous and is induced by the mixing with a heavy charged vector-like lepton (VLL).
We show that the non-decoupling of this VLL is linked with the presence of CP violation and its coupling with the SM leptons are partly fixed from the SM Yukawas.
Due to the large leptonic mixing angles, these couplings are typically of the same order and there is no flavor preference.
Strong but not definitive constraints come from charged lepton flavor violating processes because the VLL can decouple from one or two leptonic flavors in very special points of parameter space.
These special points are very sensitive to the neutrino Majorana phases.

Presentation materials

Presentantion_28_09.pdf