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Measurements of neutral B decay branching fractions to K^0_Sπ^+π^- final states and the charge asymmetry of B^0 → K^(*+)π^-

Aubert, B. and Albert, J. and Chen, E. and Dubois-Felsmann, G. P. and Dvoretskii, A. and Hitlin, D. G. and Narsky, I. and Piatenko, T. and Porter, F. C. and Ryd, A. and Samuel, A. (2006) Measurements of neutral B decay branching fractions to K^0_Sπ^+π^- final states and the charge asymmetry of B^0 → K^(*+)π^-. Physical Review D, 73 (3). Art. No. 031101. ISSN 2470-0010.

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We analyze the decay B^0 → K^0_Sπ^+π^- using a sample of 232 × 10^6 Υ(4S) → BB̅ 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(B^0 → K^0π^+π^-)=(43.0 ± 2.3 ± 2.3) × 10^(-6),  B(B^0 → f_0(→ π^+π^-)K^0)=(5.5 ± 0.7 ± 0.5 ± 0.3)×10^(-6) and B(B^0→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 B^0 → K^(*+)π^-, A_(K*π) = -0.11 ± 0.14 ± 0.05.

Item Type:Article
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Dubois-Felsmann, G. P.0000-0003-1598-6979
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Additional Information:© 2006 American Physical Society. Received 4 August 2005; published 15 February 2006. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues, and for the substantial dedicated effort from the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (USA), NSERC (Canada), IHEP (China), CEA and CNRS-IN2P3 (France), BMBF and DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MIST (Russia), and PPARC (United Kingdom). Individuals have received support from CONACyT (Mexico), A. P. Sloan Foundation, Research Corporation, and Alexander von Humboldt Foundation.
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
NSERC (Natural Sciences and Engineering Research Council of Canada)UNSPECIFIED
Institute of High Energy Physics (IHEP) (China)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA) (France)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)/Institut National de Physique Nucléaire et Physique des Particules (IN2P3) (France)UNSPECIFIED
Bundesministerium fur Bildung und Forschung (BMBF) (Germany)UNSPECIFIED
German Deutsche Forschungsgemeinschaft (DFG) (Germany)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN) (Italy)UNSPECIFIED
Foundation for Fundamental Research on Matter (FOM) (The Netherlands)UNSPECIFIED
Research Council of Norway (NFR)UNSPECIFIED
CONACYT (Consejo Nacional de Ciencia y Tecnología) (Mexico)UNSPECIFIED
A. P. Sloan FoundationUNSPECIFIED
Research CorporationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Issue or Number:3
Classification Code:PACS: 13.25.Hw, 11.30.Er, 12.15.Hh
Record Number:CaltechAUTHORS:20110211-100135302
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22131
Deposited By: Benjamin Perez
Deposited On:11 Feb 2011 22:54
Last Modified:09 Mar 2020 13:18

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