Speaker
Dr
alessandro bertolin
(LHCb - INFN (Padova))
Description
The weak phase $\gamma$ is one of the least well-determined CKM
parameters.
It can be measured using time-independent decay rates, such as
those of $B^+ \to D K^+$ with $D \to K^0_s h h$, or by
time-dependent studies, as in $B^0_s \to D_s^{\mp} K^{\pm}$
decays.
The precise determination of $\gamma$ is one of the most important
goals of LHCb.
Several recent time-independent and time-dependent measurements of
$\gamma$ will be review together with the result of their combination,
used to achieve the best accuracy on $\gamma$.
Finally the first observation of the decay mode
$B^0_s \to D_s^{*\mp} K^{\pm}$
will be presented. The first observation of this mode is particularly
relevant since it will be used, in the future, for a new time-dependent
measurement of $\gamma$ that could be added to the $\gamma$ combination.
Author
Dr
alessandro bertolin
(LHCb - INFN (Padova))
