Matter-Antimatter Asymmetry: With the SM and BeyondConfirmed

by Seyda Ipek (Carleton University)

Tuesday Jan 21, 2025, 1:00 p.m. → 2:30 p.m. America/Toronto

PI/3-394 - Skyroom (Perimeter Institute for Theoretical Physics)

There is more matter than antimatter in the universe. This asymmetry requires three conditions: 1- Baryon (or lepton) number violation, 2- C and CP violation and 3- out-of-thermal equilibrium conditions in the early universe, before BBN. Although the SM does not have any out-of-equilibrium process, it does provide baryon number violation and CP violation. Still, it is commonly accepted that the SM CP violation is not enough for producing the observed baryon asymmetry. I will present one new physics model in which the SM CP violation, that is measured in the B meson system, is in fact enough to generate the baryon asymmetry.