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Properties of the charmed strange baryonA + and evidence for the charmed doubly strange baryonT 0 at 2.74 GeV/c2

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Zeitschrift für Physik C Particles and Fields

Abstract

Results are presented from experiment WA62, which searched for charmed strange baryon states produced inΣ − interactions in the SPS charged hyperon beam at CERN. Properties of theA + (csu) baryon at 2.46 GeV/c2 are summarized and upper limits are given for decay branching ratios into various channels. Three events observed at 2.74 GeV/c2 in theΞ − K − π + π + mass spectrum are interpreted as the first evidence for theT 0 baryon with quark content css. Results of a search for theA 0 (csd), the isospin partner of theA +, are presented. The results are discussed in the context of current theoretical understanding, and a comparison with other experiments on hadroproduction of charmed baryons is made.

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Author notes

  1. S. F. Biagi

    Present address: University of Liverpool, UK

  2. A. J. Britten

    Present address: Dept. of Nuclear Medicine, Royal Marsden Hospital, London, UK

  3. H. J. Burckhart

    Present address: CERN, Geneva, Switzerland

  4. W. C. Louis

    Present address: Princeton University, NJ, USA

  5. K. -P. Streit

    Present address: Physikalisches Institut, Universität Heidelberg, Germany

Authors and Affiliations

  1. H.H. Wills Physics Laboratory, University, BS8 1TL, Bristol, UK

    W. M. Gibson & V. J. Smith

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

    K. -P. Streit

  3. Université de Genève, CH-1211, Genève, Switzerland

    M. Bourquin, P. Extermann, T. Modis & P. Schirato

  4. Physikalisches Institut, Universität, D-6900, Heidelberg, Germany

    H. J. Burckhart, P. Igo-Kemenes & H. W. Siebert

  5. Université de Lausanne, CH-1000, Lausanne, Switzerland

    Ch. Doré, M. Gailloud, P. Jacot-Guillarmod, Ph. Rosselet & R. Weill

  6. Queen Mary College, University, E1 4NS, London, UK

    S. F. Biagi, A. J. Britten & A. A. Carter

  7. University of Melbourne, Australia

    S. N. Tovey

  8. Rutherford Appleton Laboratory, Chilton, OX11 0QX, Didcot, Oxon, UK

    R. M. Brown, C. N. P. Gee, J. C. Gordon, R. J. Gray, W. C. Louis, B. J. Saunders & J. J. Thresher

Authors
  1. S. F. Biagi
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  2. M. Bourquin
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  5. H. J. Burckhart
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  6. A. A. Carter
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  7. Ch. Doré
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  8. P. Extermann
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  9. M. Gailloud
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  10. C. N. P. Gee
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  11. W. M. Gibson
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  12. J. C. Gordon
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  13. R. J. Gray
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  14. P. Igo-Kemenes
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  15. P. Jacot-Guillarmod
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  16. W. C. Louis
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  17. T. Modis
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  18. Ph. Rosselet
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  19. B. J. Saunders
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  20. P. Schirato
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  21. H. W. Siebert
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  22. V. J. Smith
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  23. K. -P. Streit
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  24. J. J. Thresher
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  25. S. N. Tovey
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  26. R. Weill
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Additional information

Work supported in part by the UK Science and Engineering Research Council, the Swiss National Foundation for Scientific Research and the Bundesministerium für Forschung und Technologie, FRG

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Biagi, S.F., Bourquin, M., Britten, A.J. et al. Properties of the charmed strange baryonA + and evidence for the charmed doubly strange baryonT 0 at 2.74 GeV/c2 . Z. Phys. C - Particles and Fields 28, 175–185 (1985). https://doi.org/10.1007/BF01575721

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  • DOI: https://doi.org/10.1007/BF01575721

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