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Abstract: We present the results of searches for decays of B mesons to final stateswith a b 1 meson and a charged pion or kaon. The data, collected with the BaBardetector at the Stanford Linear Accelerator Center, represent 382 millionB-Bbar pairs produced in e+e- annihilation. The results for the branchingfractions are, in units of 10^{-6}, BB+ -> b1^0 pi+ = 6.7 +- 1.7 +- 1.04.0 sigma, BB+ -> b1^0 K+ = 9.1+- 1.7+- 1.0 5.3 sigma, BB0 -> b1^-+pi^+- = 10.9 +- 1.2 +- 0.9 8.9 sigma, and BB0 -> b1^-K+ = 7.4 +- 1.0+- 1.0 6.1 sigma, with the assumption that Bb 1 -> omega pi=1. We alsomeasure charge and flavor asymmetries AchB+ -> b1^0 pi+ = 0.05 +- 0.16 +-0.02, AchB+ -> b1^0 K+ = -0.46 +- 0.20 +- 0.02, AchB0 -> b1^-+ pi^+- =-0.05 +- 0.10 +- 0.02, CB0 -> b1^-+ pi^+- = -0.22 +- 0.23 +- 0.05,deltaCB0 -> b1^-+ pi^+- = -1.04 +- 0.23 +- 0.08, and AchB0 -> b1^-K+ =-0.07 +- 0.12 +- 0.02, The first error quoted is statistical, the secondsystematic, and for the branching fractions, the significance is given inparentheses.



Autor: The BABAR Collaboration: B. Aubert, et al

Fuente: https://arxiv.org/







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