Carlos Miró Arenas '#StudentSeminar: CP violation in B meson mixing: implications for baryogenesis and future searches'

Tuesday 25 Mar 2025, 15:00 → 16:30 Europe/Madrid

1001-Primera-1-1-1 - Paterna. Seminario (Universe)

It is well-known that CP violation is one of the necessary ingredients to generate the observed matter-antimatter asymmetry of the Universe. Neutral B mesons naturally exhibit CP violating oscillations, such that the amount of CP violation in their mixing can be directly related to the baryon asymmetry through the B-mesogenesis mechanism. With this in mind, it is interesting to analyze the extent to which CP is violated in B meson mixing within different scenarios beyond the Standard Model. In particular, we consider: (i) the effects of heavy new physics in the mass mixing following a model-independent approach, (ii) the implications of CKM unitarity deviations with the inclusion of vector-like quarks, and (iii) the role of new contributions to the decay width mixing. After revisiting the basics of neutral meson mixing, we present the available parameter space for the relevant CP asymmetries, studying their compatibility with the B-mesogenesis framework and comparing it with the expected experimental sensitivity for these quantities at LHCb and Belle II.