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Neutral strange particle production in high transverse momentum π− nucleus interactions at ∼40 GeV/c

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Zeitschrift für Physik C Particles and Fields

Abstract

Measurements ofK 0 s , Λ and\(\bar \Lambda \) production in π− nucleus (C, Cu, Pb) interactions are presented. The experiment was carried out with the streamer chamber spectrometer RISK using a π− beam of ∼40 GeV/c and a trigger requiring a secondary charged particle with transverse momentum above 1.1 GeV/c. Production cross sections, relative production rates and distributions of Feynmanx and transverse momentum squared as well as correlations between theV 0 and the trigger particle are presented. The results are compared and found to be in agreement withK 0 s , Λ and\(\bar \Lambda \) data from untriggered π− p and π− C interactions, except for the relative production rate of antilambdas which is about to times larger in high-p t collisions. Our results can be well interpreted within the dual topological unitarization model.

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Authors and Affiliations

  1. Institute for High Energy Physics, DDR-1615, Berlin-Zeuthen

    H. Bärwolff, C. Dreher, W. Friebel, U. Gensch, H. E. Roloff, H. J. Schreiber & C. Spiering

  2. Central Research Institute for Physics, H-1088, Budapest, Hungary

    E. Denes, L. Diosi, T. Gemesy, L. Jenik, J. Krasznovsky, Gy. Pinter & I. Wagner

  3. Joint Institute for Nuclear Research, SU-141980, Dubna, USSR

    A. V. Bannikov, J. Boehm, Yu. V. Grishkevich, B. A. Khomenko, Z. V. Krumstein, Yu. P. Merekov, V. I. Petrukhin, K. Safarik, G. A. Shelkov, L. G. Tkachev & L. S. Vertogradov

  4. Institute of Physics of Charles University, CS-18000, Prague, CSSR

    T. Soukup, A. Valkarova, S. Valkar & P. Zavada

  5. Institute for Nuclear Research and Nuclear Energy, Sofia, Bulgaria

    V. G. Kristeva, V. N. Penev & A. I. Sklovskaja

  6. Institute of Physics, SU-380086, Tbilisi, USSR

    A. K. Javreishvili, A. I. Kharchilava & T. A. Lomatadze

  7. Institute of Experimental Physics, Warsaw University, PL-00681, Warsaw, Poland

    W. Dominik, J. Gajewski, S. Majewski, K. Pniewska, L. Ropelewski & J. A. Zakrzewski

Authors
  1. H. Bärwolff
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  2. C. Dreher
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  3. W. Friebel
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  4. U. Gensch
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  5. H. E. Roloff
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  6. H. J. Schreiber
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  7. C. Spiering
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  8. E. Denes
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  9. L. Diosi
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  10. T. Gemesy
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  11. L. Jenik
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  12. J. Krasznovsky
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  13. Gy. Pinter
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  14. I. Wagner
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  15. A. V. Bannikov
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  16. J. Boehm
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  17. Yu. V. Grishkevich
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  18. B. A. Khomenko
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  19. Z. V. Krumstein
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  20. Yu. P. Merekov
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  21. V. I. Petrukhin
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  22. K. Safarik
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  23. G. A. Shelkov
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  24. L. G. Tkachev
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  25. L. S. Vertogradov
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  26. T. Soukup
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  27. A. Valkarova
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  28. S. Valkar
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  29. P. Zavada
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  30. V. G. Kristeva
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  31. V. N. Penev
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  32. A. I. Sklovskaja
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  33. A. K. Javreishvili
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  34. A. I. Kharchilava
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  35. T. A. Lomatadze
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  36. W. Dominik
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  37. J. Gajewski
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  38. S. Majewski
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  39. K. Pniewska
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  40. L. Ropelewski
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  41. J. A. Zakrzewski
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RISK Collaboration

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RISK Collaboration., Bärwolff, H., Dreher, C. et al. Neutral strange particle production in high transverse momentum π− nucleus interactions at ∼40 GeV/c. Z. Phys. C - Particles and Fields 37, 337–345 (1988). https://doi.org/10.1007/BF01578126

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  • DOI: https://doi.org/10.1007/BF01578126

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