The Theoretical status of $\bar{B}-B$-mixing and lifetimes of heavy hadrons

2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/204513In this talk we review the theoretical status of the lifetime ratios of heavy hadrons and of the B-mixing quantities $ΔM_s$, $ΔΓ_s$ and $ϕ_s$. While $ΔM_s$ and $ΔΓ_s$ suffer from large uncertainties due to the badly known decay constants, the ratio $ΔΓ_s / ΔM_s$ can be determined with almost no non-perturbative uncertainties, therefore it can be used to look for possible new physics effects.Invited Plenary talk at The 4th International Conference on Flavor Physics, Sep. 24-28, 2007, BeijingHigh Energy Physics - PhenomenologyThe Theoretical status of $\bar{B}-B$-mixing and lifetimes of heavy hadronstext