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Hyperon production ine + e −-annihilation at 10 GeV center of mass energy

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Zeitschrift für Physik C Particles and Fields

Abstract

The production cross sections for the Λ, Σ0, Ξ−, Σ0 (1385), Ξ0 (1530) and Ω− hyperons have been measured, both in the continuum and in direct ϒ decays. Baryon rates in direct ϒ decays are enhanced by a factor of 2.5 or more compared to the continuum. Such a large baryon enhancement cannot be explained by standard fragmentation models. The strangeness suppression for baryons and mesons turns out to be the same. A strong suppression of spin 3/2 states is observed.

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Author notes

  1. K. W. Edwards & H. Kapitza

    Present address: Carleton University, Ottawa, Ontario, Canada

  2. W. R. Frisken

    Present address: York University, Downsview, Ontario, Canada

  3. D. J. Gilkinson, D. M. Gingrich, R. Kutschke, R. S. Orr, J. A. Parsons, J. D. Prentice, J. D. Swain & T. -S. Yoon

    Present address: University of Toronto, Toronto, Ontario, Canada

  4. D. B. MacFarlane, W. McLean, A. W. Nilsson, P. M. Patel & G. Tsipolitis

    Present address: McGill University, Montreal, Quebec, Canada

Authors and Affiliations

  1. DESY, D-2000, Hamburg, Federal Republic of Germany

    H. Albrecht, P. Böckmann, R. Gläser, G. Harder, A. Krüger, A. Nippe, M. Schäfer, W. Schmidt-Parzefall, H. Schröder, H. D. Schulz, F. Sefkow, J. Spengler, R. Wurth & A. Yagil

  2. Institut für Physik, Universität, D-4600, Dortmund, Federal Republic of Germany

    R. D. Appuhn, A. Drescher, D. Kamp, H. Kolanoski, U. Matthiesen, H. Scheck, G. Schweda, B. Spaan, A. Walther & D. Wegener

  3. Institut für Hochenergiephysik, Universität, D-6900, Heidelberg, Federal Republic of Germany

    J. C. Gabriel, T. Ruf, K. R. Schubert, J. Stiewe, K. Strahl, R. Waldi & S. Werner

  4. Institute of Particle Physics, Canada

    K. W. Edwards, W. R. Frisken, D. J. Gilkinson, D. M. Gingrich, H. Kapitza, R. Kutschke, D. B. MacFarlane, W. McLean, A. W. Nilsson, R. S. Orr, J. A. Parsons, P. M. Patel, J. D. Prentice, J. D. Swain, G. Tsipolitis & T. -S. Yoon

  5. University of Kansas, 66044, Lawrence, KS, USA

    R. Ammar, S. Ball, D. Coppage, R. Davis, S. Kanekal & N. Kwak

  6. Institute J. Stefan and Oddelek of Physics, University of Ljubljana, YU-61000, Ljubljana, Yugoslavia

    B. Boštjančič, G. Kernel & P. Križan

  7. Institute of Physics, University of Lund, S-22362, Lund, Sweden

    L. Jönsson

  8. Institute of Theoretical and Experimental Physics, SU-117259, Moscow, USSR

    A. Babaev, M. Danilov, B. Fominykh, A. Golutvin, I. Gorelov, V. Lubimov, V. Matveev, A. Semenov, S. Semenov, V. Shevchenko, V. Soloshenko, V. Tchistilin, I. Tichomirov & Yu. Zaitsev

  9. University of South Carolina, 29208, Columbia, SC, USA

    R. Childers, C. W. Darden & R. C. Fernholz

Authors
  1. H. Albrecht
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  2. P. Böckmann
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  3. R. Gläser
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  4. G. Harder
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  5. A. Krüger
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  6. A. Nippe
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  7. M. Schäfer
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  8. W. Schmidt-Parzefall
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  9. H. Schröder
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  10. H. D. Schulz
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  11. F. Sefkow
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  12. J. Spengler
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  13. R. Wurth
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  14. A. Yagil
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  15. R. D. Appuhn
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  16. A. Drescher
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  17. D. Kamp
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  18. H. Kolanoski
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  19. U. Matthiesen
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  20. H. Scheck
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  21. G. Schweda
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  22. B. Spaan
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  23. A. Walther
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  24. D. Wegener
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  25. J. C. Gabriel
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  26. T. Ruf
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  27. K. R. Schubert
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  28. J. Stiewe
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  29. K. Strahl
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  30. R. Waldi
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  31. S. Werner
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  32. K. W. Edwards
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  33. W. R. Frisken
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  34. D. J. Gilkinson
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  35. D. M. Gingrich
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  36. H. Kapitza
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  37. R. Kutschke
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  38. D. B. MacFarlane
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  39. W. McLean
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  40. A. W. Nilsson
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  41. R. S. Orr
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  42. J. A. Parsons
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  43. P. M. Patel
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  44. J. D. Prentice
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  45. J. D. Swain
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  46. G. Tsipolitis
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  47. T. -S. Yoon
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  48. R. Ammar
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  49. S. Ball
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  50. D. Coppage
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  51. R. Davis
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  52. S. Kanekal
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  53. N. Kwak
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  54. B. Boštjančič
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  55. G. Kernel
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  56. P. Križan
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  57. L. Jönsson
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  58. A. Babaev
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  59. M. Danilov
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  60. B. Fominykh
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  61. A. Golutvin
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  62. I. Gorelov
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  63. V. Lubimov
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  68. V. Soloshenko
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  69. V. Tchistilin
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  70. I. Tichomirov
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  71. Yu. Zaitsev
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  72. R. Childers
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  73. C. W. Darden
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  74. R. C. Fernholz
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ARGUS Collaboration

Additional information

Supported by the German Bundesministerium für Forschung und Technologie, under the contract number 054 DO 51 P

Supported by the German Bundesministerium für Forschung und Technologie, under the contract number 054 HD 24 P

Supported by the Natural Sciences and Engineering Research Council, Canada

Supported by the U.S. National Science Foundation

Supported by Raziskovalna skupnost Slovenije and the Internationales Büro KfA, Jülich

Supported by the Swedish Research Council

Supported by the U.S. Department of Energy, under contract DE-AS09-80ER10690

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ARGUS Collaboration., Albrecht, H., Böckmann, P. et al. Hyperon production ine + e −-annihilation at 10 GeV center of mass energy. Z. Phys. C - Particles and Fields 39, 177–186 (1988). https://doi.org/10.1007/BF01550992

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  • DOI: https://doi.org/10.1007/BF01550992

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