QED Corrections to $B^{-}\to {\tau }^{-}{\bar{\nu }}_{\tau }$

Claudia Cornella, Max Ferré, Matthias König +1

Using a sequence of effective field theories (EFTs), we calculate the rate for the leptonic decay $B^{-}\to {\tau }^{-}{\bar{\nu }}_{\tau }(\gamma )$ including real and virtual QED corrections, with a cut $E_{\…