Rare decays of $B_d$ mesons into four charged leptons in the Standard Model

A. V. Danilina, N. V. Nikitin

We present first theoretical predictions for various observables related to the ${\bar{B}}_d\to {\mu }^{+}{\mu }^{-}{e}^{+}{e}^{-}$ decay within the framework of the Standard Model. Our study encompass…