PS01 Heavy Flavour Physics
Charmed-B decays at BaBar
Laboratoire d’Annecy-le-Vieux de Physique des Particules CNRS/IN2P3, BP 110, F-74941 Annecy-le-Vieux CEDEX, France
Accepted: 22 October 2003
Published online: 25 October 2003
We present recent results on charmed-B decays using data collected by the BaBaR experiment at the PEP-II storage ring. This report is subdivided in 3 parts. In a first step, we present preliminary results on the measurement of the branching fractions of seven color-suppressed -meson decays into , , , and . Then we discuss the preliminary measurement of the ratio of Cabibbo-suppressed to Cabibbo-favored branching fractions , where the D 0 is possibly reconstructed in the -even π – π + and K – K + modes. For the D 0 decays into -eigenstates, a search for a direct asymmetry is performed. For the same category of decay processes, we show a precise preliminary measurement of both the branching fraction of B – decaying to D *0 K *– and of the fraction of longitudinal polarization in this decay. Finally, we present a study where the 22 possible B decays to are reconstructed exclusively. The branching fractions of the and of the B + to are presented and a search for decays , where the D sJ + represents the orbitally excited D s states, is also discussed.
© Società Italiana di Fisica, Springer-Verlag, 2004