Study of B-->D(*)anti-D(*) decays with the BABAR detector

2001/09/08 by B. Aubert, Aubert, B.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.hep-ex/0109009

19 pages, 6 figures (10 postscript files), contributed paper to the 9th Heavy Flavor Symposium

arxiv created 2001/09/08 · arxiv updated 2009/11/30

Abstract

Decays of the type B-->D(*)anti-D(*) can be used to provide a measurement of the parameter sin2beta of the Unitarity Triangle that is complementary to that derived from the mode \bpsiks. Here we report a measurement of the branching fraction and a study of the CP parity content for the decay B⁰ --> D^*+D^*- with the BABAR detector. With data corresponding to an integrated luminosity of 20.7 fb^-1 collected at the Upsilon(4S) resonance during 1999-2000, we determine the branching fraction to be BF(B⁰-->D^*+D^*-)=(8.0 +/- 1.6 (stat) +/- 1.2 (syst)) x 10^-4. The measured fraction of the component with odd CP parity is 0.22 +/- 0.18(stat) +/- 0.03(syst). Observation of a significant number of candidates in the decay modes B⁰-->D^*+D^- and B⁺ --> D^*+D^*0 is reported. All results presented in this note are preliminary.

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