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Model-independent measurement ofω→ηγ decay branching ratio

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Zeitschrift für Physik C Particles and Fields

Abstract

The rare ηγ decay width of the ω-meson has been measured in a model-independent way, with ω produced in 38 GeV/c π− p charge-exchange. Large momentum transfer events have been selected in order to eliminate ω-ρ interference contribution. BR (ω→ηγ) =(8.3±2.1)·10−4. The gammas from ω→ηγ→3γ decay have been detected with the multiphoton spectrometer GAMS-2000 at the IHEP 70 GeV proton accelerator.

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Author notes

  1. C. Bricman & J. P. Stroot

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

Authors and Affiliations

  1. Institute for High Energy Physics, 142 284, Protvino, Russia

    S. V. Donskov, A. V. Inyakin, V. A. Kachanov, G. V. Khaustov, A. A. Kondashov, A. V. Kulik, G. L. Landsberg, A. A. Lednev, V. A. Lishin, S. A. Polovnikov, V. A. Polyakov, Yu. D. Prokoshkin, S. A. Sadovsky, V. D. Samoylenko, P. M. Shagin, A. V. Shtannikov, A. V. Singovsky & V. P. Sugonyaev

  2. Institut Interuniversitaire des Sciences Nucléaires, B-1050, Brussels, Belgium

    F. G. Binon, C. Bricman & J. P. Stroot

  3. Los Alamos National Laboratory, 87544, Los Alamos, NM, USA

    D. Alde & E. A. Knapp

  4. Laboratoire d'Annecy de Physique des Particules, F-74019, Annecy-le-Vieux, France

    M. Gouanère, J. P. Peigneux & M. Poulet

  5. Université Libre de Bruxelles, CP 229, B-1050, Bruxelles, Belgium

    F. G. Binon & C. Bricman

  6. CERN, CH-1211, Geneva 23, Switzerland

    M. Boutemeur

Authors
  1. D. Alde
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  2. F. G. Binon
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  4. C. Bricman
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  5. S. V. Donskov
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  6. M. Gouanère
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  7. A. V. Inyakin
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  8. V. A. Kachanov
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  9. G. V. Khaustov
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  11. A. A. Kondashov
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  12. A. V. Kulik
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  13. G. L. Landsberg
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  14. A. A. Lednev
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  15. V. A. Lishin
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  16. J. P. Peigneux
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  17. S. A. Polovnikov
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  18. V. A. Polyakov
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  20. Yu. D. Prokoshkin
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Alde, D., Binon, F.G., Boutemeur, M. et al. Model-independent measurement ofω→ηγ decay branching ratio. Z. Phys. C - Particles and Fields 61, 35–40 (1994). https://doi.org/10.1007/BF01641884

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  • DOI: https://doi.org/10.1007/BF01641884

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