Speaker
Alexandre Carvunis
(Università di Torino & INFN)
Description
The calculation of local form factors involved in the SM predictions of semileptonic $B$-meson decays at low-$q^2$ is a crucial ingredient in the assessment of the $B$-anomalies.
We revisit their calculation in QCD Light-Cone Sum Rule with $B$-meson Light-Cone Distribution Amplitudes. In our strategy, we bypass the quark-hadron duality (QHD) approximation which usually contributes an unknown and potentially large systematic error to the prediction of form factors.
We trade this improvement for an increased reliance on higher-order contributions in perturbation theory. Unlike the systematic error from QHD, truncation errors are assessable and systematically improvable, hence allowing robust predictions of form factors.
Primary authors
Alexandre Carvunis
(Università di Torino & INFN)
Nazila Mahmoudi
(Lyon University)
Mr
Yann Monceaux
(Université de Lyon - IP2I)
