2003/07/30 by B. Aubert, BABAR Collaboration, Aubert, B. +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex
paper · pdf · doi:10.48550/arxiv.hep-ex/0307087
22 pages, 3 figures, conference paper submitted to EPS2003, to be submitted to Phys. Rev. Lett
arxiv created 2003/07/30 · openalex publication_date 2003/07/30 · arxiv updated 2009/12/01 · openalex created_date 2024/04/11 · openalex updated_date 2026/08/01
We present preliminary measurements of branching fractions and CP-violating charge asymmetries in B-meson decays to rho pi. The data sample comprises 89 million Y(4S) --> BBbar decays collected with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. We find the charge-averaged branching fractions B(B+ --> rho+ pi0) = (11.0 +/- 1.9(stat.) +/- 1.9(syst.)) * 10-6 and B(B+ --> rho0 pi+) = (9.3 +/-1.0(stat.) +/- 0.8(syst.)) * 10-6; we set a 90% confidence-level upper limit of B(B0 --> rho0 pi0) < 2.5 * 10-6. We measure the CP-violating charge asymmetries ACP(rho+ pi0) = 0.23 +/- 0.16(stat.) +/- 0.06(syst.) and ACP(rho0 pi+) = -0.17 +/- 0.11(stat.) +/- 0.02(syst.).