  The BaBar detector and SLAC PEP-II asymmetric e+e- collider tuned to the
Y(4s) resonance has collected around 23M B0 anti-B0 pairs in year 2000. The
total data sample for run 1 is 20.7fb-1, using this data we present the study
of sin2beta, with samples of B0 --> J/Psi KOS, B0 --> psi(2S) K0S and B0 -->
J/Psi KOL decays. The measured value is sin2beta 0.34+/-0.20 (stat) +/- 0.05
(syst),. In addition, we present preliminary measurements of charged and
neutral B meson lifetimes and B0-anti B0 oscillation frequency.
