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Inclusive Λ and\(\bar \Lambda\) Production inK + p interactions at 70 GeV/c

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Zeitschrift für Physik C Particles and Fields

Abstract

Inclusive and semi-inclusive production of Λ and\(\bar \Lambda\) inK + p interactions is studied at an incident momentum of 70 GeV/c. Cross sections and single particle distributions are presented and compared with data at lower energies. Scaling is observed between 32 and 70 GeV/c in the Feynmanx variable in the target and the beam fragmentation regions for Λ and\(\bar \Lambda\) inclusive production respectively. An increase of Λ (\(\bar \Lambda\)) production is observed in the beam (target) fragmentation regions, whereas the data at 70 and 32 GeV/c are reasonably close in the central region. The dependence of the Λ(\(\bar \Lambda\)) polarization as a function ofx is measured and found to be in general agreement with the results at 32 GeV/c. The (Λ\(\bar \Lambda\)) pair production cross section increases significantly from 32 to 70 GeV/c. The Λ and\(\bar \Lambda\) production associated with an identified proton is also studied.

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Authors and Affiliations

  1. Inter-University Institute for High Energies (ULB-VUB), Brussels, Belgium

    M. Barth (Chercheur IISN/Navorser IIKW), C. De Clercq (Chercheur IISN/Navorser IIKW), E. A. De Wolf (Chercheur IISN/Navorser IIKW), J. J. Dumont (Chercheur IISN/Navorser IIKW), D. P. Johnson (Chercheur IISN/Navorser IIKW), J. Lemonne (Chercheur IISN/Navorser IIKW) & P. Peeters (Chercheur IISN/Navorser IIKW)

  2. European Organization for Nuclear Research, CERN, Geneva, Switzerland

    E. A. De Wolf (Chercheur IISN/Navorser IIKW), H. Drevermann (Bevoegdverklaard Navorser NFWO Belgium), Y. Goldschmidt-Clermont (Bevoegdverklaard Navorser NFWO Belgium), G. Harigel (Bevoegdverklaard Navorser NFWO Belgium), C. Milstene (Bevoegdverklaard Navorser NFWO Belgium), J. P. Porte (Bevoegdverklaard Navorser NFWO Belgium), R. T. Ross (Bevoegdverklaard Navorser NFWO Belgium), M. Spyropoulou-Stassinaki (Bevoegdverklaard Navorser NFWO Belgium), S. Squarcia (Bevoegdverklaard Navorser NFWO Belgium), P. Theocharopoulos (Bevoegdverklaard Navorser NFWO Belgium) & G. Vassiliadis (Bevoegdverklaard Navorser NFWO Belgium)

  3. Sezione INFN and Istituto di Scienze Fisiche, Genova, Italy

    C. Milstene (Bevoegdverklaard Navorser NFWO Belgium), C. Caso (Visitor), R. Contri (Visitor), F. Fontanelli (Visitor), R. Monge (Visitor) & U. Trevisan (Visitor)

  4. Faculté des Sciences, Université de l'Etat, Mons, Belgium

    S. Squarcia (Bevoegdverklaard Navorser NFWO Belgium), J. F. Baland, J. Beaufays, J. Hanton & F. Grard

  5. University of Nijmegen, Nijmegen, The Netherlands

    P. A. van der Poel (Visitor), L. Gatignon (Visitor), W. Kittel (Visitor), W. J. Metzger (Visitor), D. J. Schotanus (Visitor), A. Stergiou (Visitor) & R. T. Van de Walle (Visitor)

  6. Institute for High Energy Physics, Serpukhov, USSR

    Y. Belokopitov, P. Chliapnikov, A. Fenyuk, L. Gerdyukov, I. Gritsaenko, G. Khromova, V. Kubic, S. Lugovsky, V. Nikolaenko, Y. Petrovykh, V. Ronjin, A. Vorobjev & V. Yarba

  7. Universitaire Instelling Antwerpen, Belgium

    E. A. De Wolf (Chercheur IISN/Navorser IIKW)

  8. Tel-Aviv University, Tel-Aviv, Israel

    C. Milstene (Bevoegdverklaard Navorser NFWO Belgium) & G. Vassiliadis (Bevoegdverklaard Navorser NFWO Belgium)

  9. Genova University, Genova, Italy

    S. Squarcia (Bevoegdverklaard Navorser NFWO Belgium)

  10. University of Athens, Greece

    G. Vassiliadis (Bevoegdverklaard Navorser NFWO Belgium)

Authors
  1. M. Barth
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  2. C. De Clercq
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  3. E. A. De Wolf
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  4. J. J. Dumont
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  5. D. P. Johnson
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  6. J. Lemonne
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  7. P. Peeters
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  8. H. Drevermann
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  9. Y. Goldschmidt-Clermont
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  10. G. Harigel
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  11. C. Milstene
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  12. J. P. Porte
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  13. R. T. Ross
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  14. M. Spyropoulou-Stassinaki
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  15. S. Squarcia
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  16. P. Theocharopoulos
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  17. G. Vassiliadis
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  18. C. Caso
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  19. R. Contri
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  20. F. Fontanelli
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  21. R. Monge
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  22. U. Trevisan
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  23. J. F. Baland
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  24. J. Beaufays
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  25. J. Hanton
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  26. F. Grard
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  27. P. A. van der Poel
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  28. L. Gatignon
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  29. W. Kittel
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  30. W. J. Metzger
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  31. D. J. Schotanus
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  32. A. Stergiou
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  33. R. T. Van de Walle
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  34. Y. Belokopitov
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  35. P. Chliapnikov
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  36. A. Fenyuk
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  37. L. Gerdyukov
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  38. I. Gritsaenko
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  39. G. Khromova
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  40. V. Kubic
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  41. S. Lugovsky
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  42. V. Nikolaenko
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  43. Y. Petrovykh
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  44. V. Ronjin
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  45. A. Vorobjev
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  46. V. Yarba
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Additional information

Participating under the terms of the 1967 agreement between CERN and the USSR State Committee for the Utilization of Atomic energy

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Barth, M., De Clercq, C., De Wolf, E.A. et al. Inclusive Λ and\(\bar \Lambda\) Production inK + p interactions at 70 GeV/c. Z. Phys. C - Particles and Fields 10, 205–213 (1981). https://doi.org/10.1007/BF01549728

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  • DOI: https://doi.org/10.1007/BF01549728

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