3 research outputs found
A study of time-dependent CP-violating asymmetries in B0 --> J/psi K0S and B0 --> psi(2S) K0S decays
BABAR has studied the time dependent asymmetries in the the decays B0 ->
J/psi K0S and B0 -> psi(2S) K0S in a data set of 9.0 fb^-1 taken at the
Y(4S)resonance. In these channels we reconstruct 168 events of which 120 are
flavor tagged and used in a likelihood fit where we determine sin2beta. The
flavor of the other neutral mesons is tagged using information primarily
from identified leptons and Kaons. A neural network is used to recover events
without any clear Kaon or lepton signature. A preliminary result of
sin2beta=0.12+/-0.37+/-0.09 is obtained.Comment: 17 pages, presented at the 7th International Conference on B-Physics
at Hadron Machine
Inclusive Rare B Decays
We review the present status of rare B decays, focusing on inclusive decay
modes and their role in our search for new physics. We also briefly discuss
direct CP violation in rare B decays and the rare kaon decays and , which offer complementary
opportunities for precision flavour physics.Comment: 46 pages, latex, 17 figures, references adde