We report a measurement of the branching fraction of the decay B-0-->D*+D*- and of the CP-odd component of its final state using the BABAR detector. With data corresponding to an integrated luminosity of 20.4 fb (-1) collected at the Y(4S) resonance during 1999-2000, we have reconstructed 38 candidate signal events in the mode B-0-->D*+D*- with an estimated background of 6.2+/-0.5 events. From these events, we determine the branching fraction to be B(B-0-->D*+D*-)=[8.3+/-1.6(stat)+/-1.2(syst)]x10(-4). The measured CP-odd fraction of the final state is 0.22+/-0.18(stat)+/-0.03(syst).

Aubert, B., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., Lees, J., et al. (2002). Measurement of the branching fraction and CP content for the decay B0 → D*+D*-. PHYSICAL REVIEW LETTERS, 89(6), 1-7 [10.1103/PhysRevLett.89.061801].

Measurement of the branching fraction and CP content for the decay B0 → D*+D*-

CARPINELLI, Massimo;
2002

Abstract

We report a measurement of the branching fraction of the decay B-0-->D*+D*- and of the CP-odd component of its final state using the BABAR detector. With data corresponding to an integrated luminosity of 20.4 fb (-1) collected at the Y(4S) resonance during 1999-2000, we have reconstructed 38 candidate signal events in the mode B-0-->D*+D*- with an estimated background of 6.2+/-0.5 events. From these events, we determine the branching fraction to be B(B-0-->D*+D*-)=[8.3+/-1.6(stat)+/-1.2(syst)]x10(-4). The measured CP-odd fraction of the final state is 0.22+/-0.18(stat)+/-0.03(syst).
Articolo in rivista - Articolo scientifico
Calorimeters; Computer simulation; Monte Carlo methods; Optimization; Photons; Vectors; Branching fraction; Cherenkov detector; Drift chamber; Electromagnetic calorimeter; High energy physics;
English
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B. Aubert et al. (BABAR Collaboration)
Aubert, B., Boutigny, D., Gaillard, J., Hicheur, A., Karyotakis, Y., Lees, J., et al. (2002). Measurement of the branching fraction and CP content for the decay B0 → D*+D*-. PHYSICAL REVIEW LETTERS, 89(6), 1-7 [10.1103/PhysRevLett.89.061801].
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