Measurement of Neutral B Decay Branching Fractions to Kspi+pi- Final States

Details Measurement of Neutral B Decay Branching Fractions to Kspi+pi- Final States Measurement of Neutral B Decay Branching Fractions to Kspi+pi- Final States

2004-08-13

arxiv.org/abs/hep-ex/0408054v2

Phys.Rev.D70:091103,2004

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages, 3 figures, submitted to Physics Review D (Rapid Communications) and the 32nd International Conference On High-Energy

Scientific paper

10.1103/PhysRevD.70.091103

Branching fraction measurements using B-meson decays to Kspi+pi- are presented. These measurements were obtained by analyzing a data sample of 88.9 million Y(4S) --> BB decays collected with the BaBar detector at the SLAC PEP-II asymmetric-energy B factory. Using a maximum likelihood fit, the following branching fraction results were obtained: Br(B0 -> K0pi+pi- = (43.7 +/- 3.8 +/- 3.4) * 10^-6, Br(B0 --> K{*+}pi-) = (12.9 +/- 2.4 +/- 1.4) * 10$^-6} and Br(B0 --> D-(--> Kspi-)pi+ = (42.7 +/- 2.1 +/- 2.2) * 10^{-6}. The CP violating char ge asymmetry A(K*pi} for the decay B0 --> $K{*+}pi-$ was measured to be A(K*pi} = 0.23 +/- $0.18^{+0.09}_{-0.06}$. For all these measurements the first error is statistical and the second is systematic.

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