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Measurement of J/ψ Production in Continuum e^+e^− Annihilations near √s = 10.6 GeV

Aubert, B. and Chen, E. and Dubois-Felsmann, G. P. and Dvoretskii, A. and Hitlin, D. G. and Metzler, S. and Oyang, J. and Porter, F. C. and Ryd, A. and Samuel, A. and Weaver, M. and Yang, S. and Zhu, R. Y. (2001) Measurement of J/ψ Production in Continuum e^+e^− Annihilations near √s = 10.6 GeV. Physical Review Letters, 87 (16). Art. No. 162002. ISSN 0031-9007. doi:10.1103/PhysRevLett.87.162002.

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The production of J/ψ mesons in continuum e^+e^− annihilations has been studied with the BABAR detector at energies near the Υ(4S) resonance. The mesons are distinguished from J/ψ production in B decays through their center-of-mass momentum and energy. We measure the cross section e^+e^− → J/ψX to be 2.52±0.21±0.21pb. We set a 90% C.L. upper limit on the branching fraction for direct Υ(4S) → J/ψX decays at 4.7×10^(-4).

Item Type:Article
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URLURL TypeDescription
Dubois-Felsmann, G. P.0000-0003-1598-6979
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Zhu, R. Y.0000-0003-3091-7461
Additional Information:© 2001 The American Physical Society. Received 8 June 2001; published 27 September 2001. We are grateful for the excellent luminosity and machine conditions provided by our PEP-II colleagues. The collaborating institutions wish to thank SLAC for its support and kind hospitality. This work is supported by DOE and NSF (U.S.A.), NSERC (Canada), IHEP (China), CEA and CNRS-IN2P3 (France), BMBF (Germany), INFN (Italy), NFR (Norway), MIST (Russia), and PPARC (United Kingdom). Individuals have received support from the Swiss NSF, 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 (IHEP)UNSPECIFIED
Commissariat à l'énergie 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
Istituto Nazionale di Fisica Nucleare (INFN)UNSPECIFIED
Research Council of NorwayUNSPECIFIED
Particle Physics and Astronomy Research Council (PPARC)UNSPECIFIED
Swiss National Science Foundation (SNSF)UNSPECIFIED
Alfred P. Sloan FoundationUNSPECIFIED
Research CorporationUNSPECIFIED
Alexander von Humboldt FoundationUNSPECIFIED
Issue or Number:16
Record Number:CaltechAUTHORS:20180312-140549714
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:85254
Deposited By: Tony Diaz
Deposited On:12 Mar 2018 21:33
Last Modified:15 Nov 2021 20:27

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