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
2002
89
6
1
7
061801
none
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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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/390047
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