Orateur
Zhao-ting Pan
(LPSC Grenoble)
Description
The measurements of inclusive semileptonic B-meson decays allow a precise
determination of the CKM matrix elements |V_{ub}| and |V_{cb}|, relevant
for the study of flavor and CP violation in the quark sector. This requires,
from the theoretical counterpart, the calculation of the NNLO corrections
to differential decay distributions, from which it is possible to derive
predictions for partial decay rates with arbitrary experimental cuts.
The two-loop virtual corrections to the decay process $b \to u \, W^{*} $,
where $b$ and $u$ are a massive and massless quark, respectively, and $W^{*}$
is an off-shell charged weak boson, that subsequently decays in a lepton
anti-neutrino pair, are known already in the literature. In this poster,
we present the calculation strategy and first results concerning the real
radiation, necessary to complete the NNLO analysis.
Auteur principal
Zhao-ting Pan
(LPSC Grenoble)
