Measurements of neutral B decay branching fractions to K-S(0)pi(+)pi(-) final states and the charge asymmetry of B-0 -> K*+pi(-)

B. Aubert, J.Y. Chen, K. Peters, L.L. Zhang, S. Chen, M.C. Simani, X.H. Li, M.A. Baak, H.J. Bulten, G. Raven, H. Snoek, P. David, H. Schroder, N. van Bakel, Z. Yu

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

We analyze the decay B0→K0Sπ+π− using a sample of 232×106 Υ(4S)→B¯¯¯B decays collected with the BABAR detector at the SLAC PEP-II asymmetric-energy B factory. A maximum likelihood fit finds the following branching fractions: B(B0→K0π+π−)=(43.0±2.3±2.3)×10−6,  B(B0→f0(→π+π−)K0)=(5.5±0.7±0.5±0.3)×10−6 and B(B0→K*+π−)=(11.0±1.5±0.5±0.5)×10−6. For these results, the first uncertainty is statistical, the second is systematic, and the third (if present) is due to the effect of interference from other resonances. We also measure the CP-violating charge asymmetry in the decay B0→K*+π−, AK∗π=−0.11±0.14±0.05.
Original languageEnglish
Article number031101(R)
JournalPhysical Review D
Volume73
Issue number3
DOIs
Publication statusPublished - 1 Feb 2006

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