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Study ofηπ+π− in the ϱ′(1600) mass region photoproduced in the reaction γp→ηπ+π− p at photon energies of 20 to 70 GeV

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Zeitschrift für Physik C Particles and Fields

Abstract

In diffractive photoproduction ofηπ+π−, the two-body substatesηρ0 andA 2π are found to contribute significantly to the cross-section forηπ+π− masses below 2.4 GeV. From a spin-parity analysis the branching ratio, ρ′(1600)→ηρ/ρ′(1600)→, is determined to be <0.02 at the 68.3% confidence level. TheA 2π component shows an enhancement around 1.7 GeV. The spin-parity analysis indicates a probable contribution to this signal from exclusive photoproduction of theg(1690).

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Authors and Affiliations

  1. Physikalisches Institut der Universität Bonn, Nussallee 12, 5300, Bonn 1, Federal Republic of Germany

    B. Diekmann, K. Heinloth, H. -P. Jakob, M. Jung, V. Liebenau, H. Marsiske, E. Paul, M. Reidenbach, H. Rotscheidt & A. Schlösser

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

    J. -C. Lassalle, G. N. Patrick & K. M. Storr

  3. Natural Philosophy Department, University of Glasgow, G128QQ, Glasgow, UK

    P. J. Bussey, J. B. Dainton, C. N. Paterson, C. Raine, I. O. Skillicorn & K. M. Smith

  4. Department of Physics, University of Lancaster, LA1 4YB, Lancaster, UK

    T. J. Brodbeck, A. B. Clegg, P. J. Flynn, R. C. W. Henderson & D. Newton

  5. Department of Physics, Schuster Lab., The University, M139PL, Manchester, UK

    T. J. Axon, D. Barberis, B. Dickinson, A. Donnachie, R. J. Ellison, R. E. Hughes-Jones, M. Ibbotson, G. D. Lafferty, J. B. Lane, D. Mercer, R. J. Thompson, A. P. Waite & M. F. Worsell

  6. Laboratoire de Physique Théorique et Hautes Energies, Université Pièrre et Marie Curie (Paris VI), Tour 16, 4, Place Jussien, F-75230, Paris Cedex 05, France

    J. Laberrigue, J. M. Lévy, Ch. de la Vaissière & T. P. Yiou

  7. Rutherford and Appleton Laboratory Chilton, OX11 0QX, Didcot, UK

    M. Atkinson, M. Davenport, P. Flower, J. S. Hutton, B. R. Kumar, J. A. G. Morris, J. V. Morris & P. H. Sharp

  8. Dept. of Physics, University of Sheffield, The Hick's Bldg, S10 2TN, Sheffield, UK

    G. R. Brookes, J. J. Bunn, W. Galbraith & R. H. McClatchey

Authors
  1. M. Atkinson
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  2. T. J. Axon
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  3. D. Barberis
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  7. P. J. Bussey
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  9. J. B. Dainton
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  10. M. Davenport
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  11. B. Dickinson
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  12. B. Diekmann
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  13. A. Donnachie
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  14. R. J. Ellison
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  15. P. Flower
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  16. P. J. Flynn
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  17. W. Galbraith
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  18. K. Heinloth
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  19. R. C. W. Henderson
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  20. R. E. Hughes-Jones
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  21. J. S. Hutton
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  22. M. Ibbotson
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  23. H. -P. Jakob
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  24. M. Jung
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  25. B. R. Kumar
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  26. J. Laberrigue
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  27. G. D. Lafferty
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  28. J. B. Lane
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  29. J. -C. Lassalle
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  30. J. M. Lévy
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  31. V. Liebenau
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  32. R. H. McClatchey
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  33. H. Marsiske
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  34. D. Mercer
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  35. J. A. G. Morris
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  36. J. V. Morris
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  37. D. Newton
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  38. C. N. Paterson
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  39. G. N. Patrick
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  40. E. Paul
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  41. C. Raine
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  42. M. Reidenbach
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  43. H. Rotscheidt
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  44. A. Schlösser
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  45. P. H. Sharp
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  46. I. O. Skillicorn
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  50. Ch. de la Vaissière
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  51. A. P. Waite
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  52. M. F. Worsell
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  53. T. P. Yiou
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Omega Photon Collaboration

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Omega Photon Collaboration., Atkinson, M., Axon, T.J. et al. Study ofηπ+π− in the ϱ′(1600) mass region photoproduced in the reaction γp→ηπ+π− p at photon energies of 20 to 70 GeV. Z. Phys. C - Particles and Fields 30, 531–539 (1986). https://doi.org/10.1007/BF01571800

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  • DOI: https://doi.org/10.1007/BF01571800

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