Charged and Neutral ${\bar{B}}_{u,d,s}\to \gamma$ Form Factors from Light Cone Sum Rules at NLO

Tadeusz Janowski, Ben Pullin, Roman Zwicky

We present the first analytic $\mathcal{O}({\alpha }_s)$-computation at twist-$1$,$2$ of the ${\bar{B}}_{u,d,s}\to \gamma$ form factors within the framework of sum rules on the light-cone. These for…