Probing New Physics via the $B_s^0\to {\mu }^{+}{\mu }^{-}$ Effective Lifetime

Kristof De Bruyn, Robert Fleischer, Robert Knegjens +4

We have recently seen new upper bounds for $B_s^0\to {\mu }^{+}{\mu }^{-}$, a key decay to search for physics beyond the Standard Model. Furthermore a non-vanishing decay width difference $\Delta {\Gamma }_s$…