The 2025 Beijing Particle Physics and Cosmology Symposium (BPCS): early Universe, gravitational-wave templates, collider phenomenology

Leptogenesis via new spectator process

26 Sep 2025, 17:00

30m

北京春晖园温泉度假酒店（Chun Hui Yuan Hot Spring Resort Hotel）

Plenary

Speaker

Wei Chao (Beijing Normal University)

Description

In this talk, I will present a novel mechanism that may provide either the B-L violating source term or a brand-new spectator process for Leptogenesis mechanism. Given initial densities for various SM fermions that keep B-L=0, non-zero baryon asymmetry of the universe can be generated.