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Ξ * resonances inΞ −be interactions

I. Diffractive production in the ΛK − andΞ −π+π− channels

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Zeitschrift für Physik C Particles and Fields

Abstract

In an experiment carried out in the CERN SPS hyperon beam, the diffractive dissociation of incidentΞ − hyperons into ΛK − andΞ −π+π− final states has been observed. Several resonances are seen in the final states, including the well known Ξ(1820) which appears in both channels, and the Ξ(1680) which appears as a narrow state (M=1691.1±2.7 MeV/c2, Γ<8 MeV/c2) in the ΛK− channel and possibly also in the Ξππ channel.

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Author notes

  1. H. J. Burckhart

    Present address: CERN, CH-1211, Geneva 23, Switzerland

  2. S. F. Biagi

    Present address: University of Liverpool, UK

  3. P. Schirato

    Present address: Hôpital Cantonal Universitaire, Geneva, Switzerland

  4. C. Yanagisawa

    Present address: State University of New York at Stony Brook, USA

Authors and Affiliations

  1. H. H. Wills Physics Laboratory, University of Bristol, BS8 1T1, Bristol, UK

    W. M. Gibson, V. J. Smith & A. T. Wood

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

    K. P. Streit

  3. University of Geneva, CH-1211, Geneva 4, Switzerland

    M. Bourquin, P. Extermann, J. Perrier, K. J. Ragan & P. Schirato

  4. Physikalisches Institut, University of Heidelberg, D-6900, Heidelberg, Federal Republic of Germany

    H. J. Burckhart, H. W. Siebert & K. P. Streit

  5. University of Lausanne, CH-1015, Lausanne, Switzerland

    M. Gailloud, P. Jacot-Guillarmod & Ph. Rosselet

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

    S. F. Biagi

  7. Rutherford Appleton Laboratory, Chilton, OX11 0QX, Didcot, UK

    R. M. Brown, C. N. P. Gee, J. J. Thresher & C. Yanagisawa

Authors
  1. S. F. Biagi
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  2. M. Bourquin
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  3. R. M. Brown
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  4. H. J. Burckhart
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  5. P. Extermann
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  6. M. Gailloud
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  7. C. N. P. Gee
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  8. W. M. Gibson
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  9. P. Jacot-Guillarmod
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  10. J. Perrier
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  11. K. J. Ragan
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  12. Ph. Rosselet
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  13. P. Schirato
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  14. H. W. Siebert
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  15. V. J. Smith
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  16. K. P. Streit
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  17. J. J. Thresher
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  18. A. T. Wood
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  19. C. Yanagisawa
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Additional information

Work supported in part by the U.K. Science and Engineering Research Council, the Swiss National Foundation for Scientific Research, and the Bundesministerium für Forschung und Technologie, Federal Republic of Germany

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Biagi, S.F., Bourquin, M., Brown, R.M. et al. Ξ * resonances inΞ −be interactions. Z. Phys. C - Particles and Fields 34, 15–22 (1987). https://doi.org/10.1007/BF01561109

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  • DOI: https://doi.org/10.1007/BF01561109

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