We present the results of searches for decays of B mesons to final states with a b1 meson and a charged pion or kaon. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 382×106 BB̄ pairs produced in e+e- annihilation. The results for the branching fractions are, in units of 10-6, B(B+→b10π+)=6.7±1.7±1.0, B(B+→b10K+)=9.1±1.7±1.0, B(B0→b1π±)=10. 9±1.2±0.9, and B(B0→b1-K+)=7.4±1.0±1.0, with the assumption that B(b1→ωπ)=1. We also measure charge and flavor asymmetries Ach(B+→b10π+)=0.05±0.16±0.02, Ach(B+→b10K+)=-0.46±0.20±0.02, Ach(B0→b1π±)=- 0.05±0.10±0.02, C(B0→b1π±)=-0.22±0. 23±0.05, ΔC(B0→b1π±)=-1.04±0.23±0.08, and Ach(B0→b1-K+)=-0.07±0.12±0.02. The first error quoted is statistical, and the second systematic.

Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Observation of B meson decays to b1π and b1K. PHYSICAL REVIEW LETTERS, 99(24) [10.1103/PhysRevLett.99.241803].

Observation of B meson decays to b1π and b1K

CARPINELLI, Massimo;
2007

Abstract

We present the results of searches for decays of B mesons to final states with a b1 meson and a charged pion or kaon. The data, collected with the BABAR detector at the Stanford Linear Accelerator Center, represent 382×106 BB̄ pairs produced in e+e- annihilation. The results for the branching fractions are, in units of 10-6, B(B+→b10π+)=6.7±1.7±1.0, B(B+→b10K+)=9.1±1.7±1.0, B(B0→b1π±)=10. 9±1.2±0.9, and B(B0→b1-K+)=7.4±1.0±1.0, with the assumption that B(b1→ωπ)=1. We also measure charge and flavor asymmetries Ach(B+→b10π+)=0.05±0.16±0.02, Ach(B+→b10K+)=-0.46±0.20±0.02, Ach(B0→b1π±)=- 0.05±0.10±0.02, C(B0→b1π±)=-0.22±0. 23±0.05, ΔC(B0→b1π±)=-1.04±0.23±0.08, and Ach(B0→b1-K+)=-0.07±0.12±0.02. The first error quoted is statistical, and the second systematic.
Articolo in rivista - Articolo scientifico
Electron energy levels; Numerical methods; Particle accelerators; Problem solving; Statistical methods; Branching fractions; Meson decays; Stanford Linear Accelerator Center; Elementary particle sources;
English
2007
99
24
241803
none
Aubert, B., Bona, M., Boutigny, D., Karyotakis, Y., Lees, J., Poireau, V., et al. (2007). Observation of B meson decays to b1π and b1K. PHYSICAL REVIEW LETTERS, 99(24) [10.1103/PhysRevLett.99.241803].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/389701
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