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Search for radiative ϒ(1S) decays into light mesons

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Zeitschrift für Physik C Particles and Fields

Abstract

We have searched for radiative decays of the ϒ(1S) resonance, ϒ(1S)→γX, whereX is one of the mesons η, η′f 2 (1270),f 2 (1720), or a narrow resonance with mass less than 3 GeV/c2 which decays into either π0π0 or ηη. The mesons are identified in their all-neutral decay modes. Since we do not find any such decays, we calculate upper limits on the corresponding branching ratios. These limits are compared to theoretical predictions and to the corresponding branching ratios measured in radiativeJ/Ψ decays.

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Author notes

  1. M. Cavalli-Sforza & D. Coyne

    Present address: Inst. for Particle Physics, University of California, 95064, Santa Cruz, CA, USA

  2. S. Cooper

    Present address: Massachusetts Institute of Technology, 02139, Cambridge, MA, USA

  3. A. Fridman

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

  4. K. Königsmann

    Present address: Sektion Physik, Universität München, D-8000, München, FRG

Authors and Affiliations

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

    C. Peck, F. C. Porter & P. Ratoff

  2. 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

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

    Z. Jakubowski, B. Muryn & G. Nowak

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

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

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

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

  6. INFN and University of Firenze, I-50100, Firenze, Italy

    A. Bizzeti, A. Cartacci, A. Compagnucci, G. Conforto, G. Landi, B. Monteleoni & P. G. Pelfer

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

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

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

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

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

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

  10. Princeton University, 08544, Princeton, NJ, USA

    D. Besset, R. Cabenda, M. Cavalli-Sforza, R. Cowan & D. Coyne

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

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

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

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

Authors
  1. P. Schmitt
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  7. A. Bizzeti
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  8. E. D. Bloom
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  18. R. Cowan
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Crystal Ball Collaboration., Schmitt, P., Antreasyan, D. et al. Search for radiative ϒ(1S) decays into light mesons. Z. Phys. C - Particles and Fields 40, 199–206 (1988). https://doi.org/10.1007/BF01555882

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  • DOI: https://doi.org/10.1007/BF01555882

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