Measurement of the CP-violation parameter sin(2beta) in B0 to J/psi-Kshort decays

G. Bauer

A sample of 400 $B_d^0/\bar{B}{}_d^0\to J/\psi K_s^0$ decays collected in $\bar{p}p$ collisions by the CDF detector is used to directly measure the CP-violation parameter $\sin (2\beta )$.…