$B\to \rho \ell \bar{\nu }$ resonance form factors from $B\to \pi \pi \ell \bar{\nu }$ in lattice QCD

Luka Leskovec, Stefan Meinel, Marcus Petschlies +3

The decay $B\to \rho \ell \bar{\nu }$ is an attractive process for determining the magnitude of the smallest CKM matrix element, $|V_{ub}|$, and can provide new insights into the origin of…