We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K-+/-pi(-/+)pi(+/-). Using a sample of (383.2 +/- 4.2) x 10(6) B (B) over bar pairs collected by the BABAR detector, we measure CP-averaged branching fractions and direct CP asymmetries for intermediate resonant and nonresonant contributions. We find evidence for direct CP violation in the decay B-+/- -> rho(0)(770)K-+/-, with a CP-violation parameter A(CP) = (+44 +/- 10 +/- 4(-13)(+5))%.

Evidence for direct CP violation from Dalitz-plot analysis of B-+/--> K-+/-pi(-/+)pi(+/-)

BIANCHI, Fabrizio;GAMBA, Diego;PELLICCIONI, Mario;
2008-01-01

Abstract

We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K-+/-pi(-/+)pi(+/-). Using a sample of (383.2 +/- 4.2) x 10(6) B (B) over bar pairs collected by the BABAR detector, we measure CP-averaged branching fractions and direct CP asymmetries for intermediate resonant and nonresonant contributions. We find evidence for direct CP violation in the decay B-+/- -> rho(0)(770)K-+/-, with a CP-violation parameter A(CP) = (+44 +/- 10 +/- 4(-13)(+5))%.
2008
78
012004
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B. Aubert;M. Bona;Y. Karyotakis;J. P. Lees;V. Poireau;E. Prencipe;X. Prudent;V. Tisserand;J. G. Tico;E. Grauges;L. Lopez;A. Palano;M. Pap...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/65876
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