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Measurement of the B^0 → J/ψπ^+π^− Branching Fraction

Aubert, B. and Chen, E. and Dubois-Felsmann, G. P. and Dvoretskii, A. and Hitlin, D. G. and Porter, F. C. and Ryd, A. and Samuel, A. and Yang, S. (2003) Measurement of the B^0 → J/ψπ^+π^− Branching Fraction. Physical Review Letters, 90 (9). Art. No. 091801. ISSN 0031-9007. doi:10.1103/PhysRevLett.90.091801.

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We present a measurement of the branching fraction for the decay of the neutral B meson into the final state J/ψπ+π−. The data set contains approximately 56 × 10^6 BB pairs produced at the Υ(4S)resonance and recorded with the BABAR detector at the PEP-II asymmetric-energy e^+e^− storage ring. The result of this analysis is B(B^0 → J/ψπ^+π^−)=(4.6 ± 0.7 ± 0.6) × 10^(−5), where the first error is statistical and the second is systematic. In addition, we measure B(B^0 → J/ψρ^0) = (1.6 ± 0.6 ± 0.4) × 10^(−5).

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:© 2003 American Physical Society. Received 7 September 2002; published 5 March 2003. 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 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), NFR (Norway), MIST (Russia), and PPARC (United Kingdom). Individuals have received support from the A. P. Sloan Foundation, Research Corporation, and Alexander von Humboldt Foundation.
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Institute of High Energy Physics (China)UNSPECIFIED
Commissariat à l’Energie Atomique (CEA)UNSPECIFIED
Centre National de la Recherche Scientifique (CNRS)UNSPECIFIED
Institut National de Physique Nucléaire et de Physique des Particules (IN2P3)UNSPECIFIED
Bundesministerium für Bildung und Forschung (BMBF)UNSPECIFIED
Deutsche Forschungsgemeinschaft (DFG)UNSPECIFIED
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Research Council of NorwayUNSPECIFIED
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Research CorporationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Issue or Number:9
Record Number:CaltechAUTHORS:20180309-142005739
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Official Citation:Measurement of the B0→J/ψπ+π− Branching Fraction B. Aubert et al. (BABAR Collaboration) Phys. Rev. Lett. 90, 091801 (2003) – Published 5 March 2003
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85235
Deposited By: Ruth Sustaita
Deposited On:12 Mar 2018 17:35
Last Modified:15 Nov 2021 20:26

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