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InclusiveJ/ψ production in decays ofB mesons

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Zeitschrift für Physik C Particles and Fields

Abstract

The production ofJ/ψ inB meson decays has been measured on the Γ(4S) resonance using the Crystal Ball detector at thee + e − storage ring DORIS II. TheJ/ψ is identified by itse + e − decay mode. We obtain a branching ratio of BR(B→J/ψX)=(1.12±0.33±0.25)% in good agreement with theoretical predictions based on color suppression. TheJ/ψ momentum distribution is observed to be peaked at high values. This implies a substantial contribution from directB meson decays to theJ/ψ. In addition upper limits onJ/ψ production in Γ(1S) and Γ(2S) decays and in continuum processes are determined.

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Author notes

  1. A. Fridman

    Present address: DPHPE, Centre d'Etudes Nucléaires de Saclay, F-91191, Gif sur Yvette, France

  2. K. Königsmann

    Present address: CERN, CH-1211, Genève 23, Switzerland

  3. B. Muryn

    Present address: Institute of Physics and Nuclear Techniques, AGH, PL-30055, Cracow, Poland

Authors and Affiliations

  1. California Institute of Technology, 91125, Pasadena, CA, USA

    C. Peck, F. C. Porter & P. Ratoff

  2. University of California at Santa Cruz, 95064, Santa Cruz, CA, USA

    M. Cavalli-Sforza, D. Coyne & D. A. Williams

  3. Carnegie-Mellon University, 15213, Pittsburgh, PA, USA

    I. Brock, A. Engler, R. W. Kraemer, D. Marlow, F. Messing, D. Prindle, B. Renger, C. Rippich & H. Vogel

  4. Cracow Institute of Nuclear Physics, PL-30055, Cracow, Poland

    Z. Jakubowski, B. Muryn & G. Nowak

  5. Deutsches Elektronen Synchrotron DESY, D-2000, Hamburg, Federal Republic of Germany

    W. Maschmann, H. W. Bartels, J. K. Bienlein, K. Brockmüller, K. Karch, T. Kloiber, W. Koch, H. Marsiske, H. Meyer, T. Skwarnicki, H. J. Trost, A. Voigt, K. Wachs & P. Zschorsch

  6. Universität Erlangen-Nürnberg, D-8520, Erlangen, Federal Republic of Germany

    G. Folger, G. Glaser, M. Kobel, B. Lurz, J. Schütte, U. Volland & H. Wegener

  7. INFN and University of Firenze, I-50125, Firenze, Italy

    A. Bizzeti, A. Cartacci, A. Compagnucci, S. Cooper, F. H. Heimlich, G. Landi, B. Monteleoni & P. G. Pelfer

  8. Universität Hamburg, I. Institut für Experimentalphysik, D-2000, Hamburg, Federal Republic of Germany

    W. Maschmann, Ch. Bieler, K. Graaf, F. H. Heimlich, F. H. Heinsius, T. Kiel, S. Krüger, R. Lekebusch, R. Nernst, D. Sievers, V. Stock & U. Strohbusch

  9. Harvard University, 02138, Cambridge, MA, USA

    D. Antreasyan, J. Irion, P. McBride, K. Strauch & D. A. Williams

  10. University of Nijmegen and NIKHEF, NL-6525 ED, Nijmegen, The Netherlands

    H. Janssen, A. C. König, W. J. Metzger, M. Reidenbach, J. Schotanus, R. T. Van de Walle & W. Walk

  11. Princeton University, 08544, Princeton, NJ, USA

    D. Besset, R. Cabenda & R. Cowan

  12. Department of Physics, HEPL, and Stanford Linear Accelerator Center, Stanford University, 94305, Stanford, CA, USA

    E. D. Bloom, R. Clare, G. Conforto, K. Fairfield, A. Fridman, J. Gaiser, D. Gelphman, G. Godfrey, R. Hofstadter, I. Kirkbride, R. Lee, S. Leffler, A. M. Litke, W. Lockman, S. Lowe, H. Marsiske, B. Niczyporuk, B. Pollock, A. Schwarz, J. Tompkins, B. van Uitert & K. Wacker

  13. Universität Würzburg, D-8700, Würzburg, Federal Republic of Germany

    K. Karch, S. Keh, H. Kilian, K. Königsmann, M. Scheer & P. Schmitt

Authors
  1. W. Maschmann
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  2. D. Antreasyan
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  3. H. W. Bartels
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  4. D. Besset
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  5. Ch. Bieler
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  6. J. K. Bienlein
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  7. A. Bizzeti
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  8. E. D. Bloom
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  9. I. Brock
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  10. K. Brockmüller
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  11. R. Cabenda
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  12. A. Cartacci
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  13. M. Cavalli-Sforza
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  14. R. Clare
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  15. A. Compagnucci
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  18. R. Cowan
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  19. D. Coyne
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  20. A. Engler
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  21. K. Fairfield
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  22. G. Folger
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  23. A. Fridman
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  24. J. Gaiser
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  25. D. Gelphman
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  32. J. Irion
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  33. Z. Jakubowski
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  34. H. Janssen
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  37. T. Kiel
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  88. R. T. Van de Walle
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  89. H. Vogel
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  97. P. Zschorsch
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Crystal Ball Collaboration

Additional information

Supported by the U.S. Department of Energy, contract No. DE-AC03-81ER40050 and by the National Science Foundation, grant No. PHY75-22980

Supported by the National Science Foundation, grant No. PHY85-12145

Supported by the U.S. Department of Energy, contract No. DE-AC02-76ER03066

Supported by the German Bundesministerium für Forschung und Technologie, contract No. 054 ER 12P(5)

Supported by the German Bundesministerium für Forschung und Technologie, contract N. 054 HH 11P(7) and by the Deutsche Forschungsgemeinschaft

Supported by the U.S. Department of Energy, contract No. DE-AC02-76ER03064

Supported by FOM-ZWO

Supported by the U.S. Department of Energy, contract No. DE-AC02-76ER03072 and by the National Science Foundation, grant No. PHY82-08761

Supported by the U.S. Department of Energy, contract No. DE-AC03-76SF00326 and by the National Science Foundation, grant No. PHY81-07396

Supported by the U.S. Department of Energy, contract No. DE-AC03-76SF00515

Supported by the German Bundesministerium für Forschung und Technologie, contract No. 054 WU 11P(1)

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Crystal Ball Collaboration., Maschmann, W., Antreasyan, D. et al. InclusiveJ/ψ production in decays ofB mesons. Z. Phys. C - Particles and Fields 46, 555–562 (1990). https://doi.org/10.1007/BF01560256

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  • DOI: https://doi.org/10.1007/BF01560256

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