Speaker
Description
Mesogenesis is a class of mechanisms for generating the baryon asymmetry and the dark matter abundance of our Universe. Mesogenesis leverages the CP violation within neutral or charged Standard Model meson systems which subsequently decay into a baryon and dark sector particle. The first such mechanism was introduced in 2018; neutral B-Mesogenesis leverages the CP violation in neutral B meson oscillations and leads to a myriad of signals linking the baryon asymmetry to experimental observables e.g. the decay of b-flavored hadrans into mesons and missing energy (see the 2022 Stealth Physics at LHCb white paper). Since then four other mechanisms have been introduced which use the CP violation in charged D, B, and Bc mesons to generate the baryon asymmetry. Each mechanism leads to a variety of direct and indirect signals at LHCb. After reviewing Mesogenesis I will summarize the theoretical progress made since the 2022 white paper. I will then discuss the specific signals arising in each mechanism of Mesogenesis that would be most relevant for LHCb.
