Orateur
M.
William Sutcliffe
(Imperial College London)
Description
A measurement of the ratio of branching fractions between $ \Lambda^0_b \rightarrow p\ \mu^- \bar{\nu} $
and $ \Lambda^0_b \rightarrow \Lambda_c^+ \mu^-\bar{\nu} $
decays is performed using data corresponding to 2fb$^{-1}$ of integrated luminosity, collected by the LHCb detector.
This combined with the latest form factor predictions obtained from lattice QCD calculations leads to the first determination of $\vert V_{ub} \vert$ at a hadron collider and in a baryon decay. The measurement achieves a relative precision of 7.3% which is more precise than any existing published exclusive measurements.
Auteurs principaux
Dr
Patrick Owen
(Imperial College London)
Prof.
Ulrik Egede
(Imperial College London)
M.
William Sutcliffe
(Imperial College London)
Co-auteur
ckm LHCb
(lapp)
