$B\to \pi {\ell }^{+}{\ell }^{-}$ decays revisited in the standard model

Zuo-Hong Li, Zong-Guo Si, Ying Wang +1

A new estimate is presented of the dileptonic $B$ decays $B\to \pi {\ell }^{+}{\ell }^{-}(\ell =e,\mu ,\tau )$ in naive factorization within the standard-model (SM) framework. Using a combination of sev…