PS03 CP Violation
CP violation studies in B 0 → D (*)± π ∓ in BaBar and Belle
Laboratoire d’Annecy-le-Vieux de Physique des Particules CNRS/IN2P3 – BP 110 F-74941 Annecy-le-Vieux CEDEX, France
Accepted: 6 January 2004
Published online: 6 February 2004
We present a preliminary measurement of the time-dependent CP asymmetries in decays of B 0 mesons to the final states D (*) π using data collected by the BaBar experiment at the PEP-II storage rings. B mesons decaying to D π are fully reconstructed, while events containing B → D (*) π are selected using a full or a partial reconstruction technique. These results can be interpreted in terms of a constraint on the angles of the unitarity triangle to set a lower bound on . The Belle experiment at the KEK-B collider is performing the same kind of studies and a preliminary estimation of the achievable error is presented.
© Società Italiana di Fisica, Springer-Verlag, 2004