Improved calculation of radiative corrections to $\tau \to \pi \pi {\nu }_{\tau }$ decays

Gilberto Colangelo, Martina Cottini, Martin Hoferichter +1

A reliable calculation of radiative corrections to $\tau \to \pi \pi {\nu }_{\tau }$ decays is an important prerequisite for using hadronic $\tau$ decays for a data-driven evaluation of the hadronic-vacuum…