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Production of V0 pairs in the hyperon experiment WA89

  • Regular Article - Experimental Physics
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Abstract

We present a comprehensive study of the inclusive production of V0V0 pairs (V0=Λ, Λ̄ or KS ) by Σ- and π- of 340 GeV/c momentum and neutrons of 260 GeV/c mean momentum in copper and carbon targets. In particular, the dependence of the xF spectra on the combination of beam-particle and produced V0V0 pair is investigated and compared to predictions obtained from PYTHIA and QSGM calculations. The data and these predictions differ in many details, the agreement can at best be termed as qualitative. A signal from decays of the tensor meson f’2(1525) was observed in the KS KS mass distribution and inclusive production cross sections were measured. No signal was found from the double-strange H-dibaryon decaying to ΛΛ.

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Authors and Affiliations

  1. Moscow Lebedev Physics Institute, Leninsky pr. 53, 117924, Moscow, Russia

    M.I. Adamovich, Yu.A. Alexandrov, S.P. Baranov, S.G. Gerassimov,  I. Konorov & M.V. Zavertyaev

  2. Sezione di Genova, Dipartimento di Fisica and I.N.F.N, 16146, Genova, Italy

    D. Barberis, R.B. Hurst & L. Rossi

  3. Max-Planck-Institut für Kernphysik Heidelberg, 69029, Heidelberg, Germany

    M. Beck, S. Brons, W. Brückner, C. Büscher, U. Dersch, F. Dropmann, S.G. Gerassimov, M. Godbersen, T. Haller, M. Heidrich, E. Hubbard, K. Königsmann,  I. Konorov, S. Masciocchi, R. Michaels, H. Neeb, S. Paul, J. Pochodzalla, I. Potashnikova, B. Povh, Z. Ren, A. Trombini, K. Vorwalter, R. Werding & E. Wittmann

  4. Institut des Sciences Nucléaires, Université de Grenoble, 38026, Grenoble Cedex, France

    C. Bérat, M. Buénerd, F. Charignon, J. Chauvin, A. Fournier, P. Martin, M. Rey-Campagnolle & E. Vesin

  5. CERN, 1211, Genève 23, Switzerland

    W. Beusch & P. Grafström

  6. Physikalisches Institut, Universität Heidelberg, 69120, Heidelberg, Germany

    M. Boss, C. Busch, E.A. Chudakov, J. Engelfried, F. Faller, N. Keller, K. Martens, J. Pochodzalla &  H.-W. Siebert

  7. Departamento de Física y Centro de Estudios Subatómicos, Universidad Técnica Federico Santa María, Casilla 110-V, Valparaíso, Chile

    S. Kovalenko, I. Potashnikova, A. Simon, O. Thilmann & G. Wälder

  8. Institut für Kernphysik, Universität Mainz, 55099, Mainz, Germany

    U. Müller, G. Rosner, H. Rudolph, L. Schmitt,  H.-W. Siebert, B. Volkemer & T. Walcher

  9. University of Bristol, Bristol, BS8 1TL, UK

    D. Newbold & V. Smith

  10. TRIUMF, Vancouver, B.C., Canada, V6T 2A3

    S. Brons

  11. Thomas Jefferson Lab, Newport News, VA, 23606, USA

    E.A. Chudakov & R. Michaels

  12. Instituto de Fisica, Universidad Autonoma de San Luis Potosi,, S.L.P., 78240, Mexico

    J. Engelfried

  13. Fraunhofer Institut für Solar Energiesysteme, 79100, Freiburg, Germany

    F. Faller

  14. Physik Department E18, Technische Universitaät München, 85747, Garching, Germany

    S.G. Gerassimov,  I. Konorov & S. Paul

  15. Fakultät für Physik, Universität Freiburg, Freiburg, Germany

    K. Königsmann & A. Simon

  16. Department of Physics, University of Utah, Salt Lake City, Utah, USA

    K. Martens

  17. Gesellschaft für Schwerionenforschung, 64291, Darmstadt, Germany

    S. Masciocchi & L. Schmitt

  18. University of Iowa, Iowa City, Iowa, 52242, USA

    C. Newsom

  19. CERN, 1211, Genève 23, Switzerland

    M. Rey-Campagnolle

  20. Department of Physics and Astronomy, University of Glasgow, Glasgow, G12 8QQ, UK

    G. Rosner

  21. NIKHEF, 1009 D8, Amsterdam, The Netherlands

    C. Scheel

Authors
  1. M.I. Adamovich
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  2. Yu.A. Alexandrov
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  3. S.P. Baranov
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  4. D. Barberis
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  5. M. Beck
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  6. C. Bérat
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  7. W. Beusch
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  8. M. Boss
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  9. S. Brons
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  10. W. Brückner
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  11. M. Buénerd
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  12. C. Busch
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  13. C. Büscher
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  14. F. Charignon
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  15. J. Chauvin
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  16. E.A. Chudakov
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  17. U. Dersch
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  18. F. Dropmann
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  19. J. Engelfried
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  20. F. Faller
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  21. A. Fournier
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  22. S.G. Gerassimov
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  23. M. Godbersen
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  24. P. Grafström
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  25. T. Haller
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  26. M. Heidrich
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  27. E. Hubbard
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  28. R.B. Hurst
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  29. K. Königsmann
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  30. I. Konorov
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  31. S. Kovalenko
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  32. N. Keller
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  33. K. Martens
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  34. P. Martin
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  35. S. Masciocchi
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  36. R. Michaels
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  37. U. Müller
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  38. H. Neeb
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  39. D. Newbold
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  40. C. Newsom
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  41. S. Paul
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  42. J. Pochodzalla
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  43. I. Potashnikova
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  44. B. Povh
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  45. Z. Ren
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  46. M. Rey-Campagnolle
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  47. G. Rosner
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  48. L. Rossi
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  49. H. Rudolph
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  50. C. Scheel
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  51. L. Schmitt
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  52. H.-W. Siebert
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  53. A. Simon
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  54. V. Smith
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  55. O. Thilmann
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  56. A. Trombini
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  57. E. Vesin
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  58. B. Volkemer
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  59. K. Vorwalter
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  60. T. Walcher
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  61. G. Wälder
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  62. R. Werding
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  63. E. Wittmann
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  64. M.V. Zavertyaev
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The WA89 Collaboration

Corresponding author

Correspondence to M.V. Zavertyaev.

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Adamovich, M., Alexandrov, Y., Baranov, S. et al. Production of V0 pairs in the hyperon experiment WA89. Eur. Phys. J. C 52, 857–874 (2007). https://doi.org/10.1140/epjc/s10052-007-0436-y

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  • DOI: https://doi.org/10.1140/epjc/s10052-007-0436-y

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