Orateur
Dr
Sergey Burdin
(University of Liverpool)
Description
We report a new measurement of the $CP$-violating phase $\phi_s$,
of the decay width difference for the two mass eigenstates $\Delta
\Gamma_s$, of the mean $B^0_s$ lifetime $\overline{\tau}_s$, and of
magnitudes of the decay amplitudes, from the flavor-tagged decay
$B^0_s\to J/\psi \phi$. For the first time, we consider possible
contributions from the decay $B^0_s \rightarrow J/\psi K^+K^-$,
with the $K^+K^-$ in a $s$ wave. This measurement is based on 8
fb$^{-1}$ of $p\overline{p}$ collisions recorded with the D0 detector
at a center-of-mass energy $\sqrt{s} = 1.96$ TeV at the Fermilab
Tevatron collider. We also present a combination of the constraints
on the $B^0_s$ width difference, $\Delta\Gamma_s$, and of the
$CP$-violating phase, $\phi_s$ obtained combining with measurement
with the results from the search for CP violation in semileptonic
$B^0_s\rightarrow\mu^+D^-_sX$ decays, the measurement of the branching
ratio for the decay $B^0_s\rightarrow D^{(*)+}_s D^{(*)-}_s$ and
the measurement of the like-sign asymmetry for semileptonic $b$
decays. Finally the prospects for including additional information
from the $B^0_s\to J/\psi f_0(980)$, $f_0(980)\to\pi^+\pi^-$
decay are also discussed.
Auteur principal
Dr
Sergey BURDIN
(University of Liverpool, UK)
