We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K±π∓π±. Using a sample of (383.2±4.2)×106 BBbar 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±→ρ0(770)K±, with a CP-violation parameter ACP=(+44±10±4+5−13)%.

Aubert, B., Bona, M., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., et al. (2008). Evidence for direct CP violation from Dalitz-plot analysis of B-+/--> K-+/-pi(-/+)pi(+/-). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 78(1), 1-13 [10.1103/PhysRevD.78.012004].

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

PATRIGNANI, CLAUDIA;
2008

Abstract

We report a Dalitz-plot analysis of the charmless hadronic decays of charged B mesons to the final state K±π∓π±. Using a sample of (383.2±4.2)×106 BBbar 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±→ρ0(770)K±, with a CP-violation parameter ACP=(+44±10±4+5−13)%.
2008
Aubert, B., Bona, M., Karyotakis, Y., Lees, J.p., Poireau, V., Prencipe, E., et al. (2008). Evidence for direct CP violation from Dalitz-plot analysis of B-+/--> K-+/-pi(-/+)pi(+/-). PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 78(1), 1-13 [10.1103/PhysRevD.78.012004].
Aubert, B; Bona, M; Karyotakis, Y; Lees, Jp; Poireau, V; Prencipe, E; Prudent, X; Tisserand, V; Tico, Jg; Grauges, E; Lopez, L; Palano, A; Pappagallo,...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/548078
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