Skip to main content
SpringerLink
Log in

First observation ofΩ * resonances

  • Published:
Zeitschrift für Physik C Particles and Fields

Abstract

In a experiment at the CERN SPS charged hyperon beam using incident Ξ−, we have obtained evidence for the production of two Ω* resonances decaying into Ξ−π+ K −, with the following parameters:M 1=2251±12,Γ 1=48±20 MeV/c2, 78 ±23 events, andM 2=2284±12,Γ 2=26±23 MeV/c2 45±10 events. The first state is also observed as a 4.2σ effect in a subsample which contains an additionalK + orK 0 in the final state. Production cross sections and branching ratios to Ξ* K − and Ξ− K * are presented.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. K.T. Chao, N. Isgur, G. Karl: Phys. Rev.D23, 155 (1981)

    Google Scholar 

  2. J.M. Richard: Phys. Lett.100 B, 515 (1981)

    Google Scholar 

  3. Preliminary results have been presented by H.W. Siebert: Proceedings of the AIP conference on Hadron Spectroscopy, University of Maryland, p. 435, 1985

  4. A preliminary indication of signal in the Ξ0(1,530)K − channel obtained by the LASS collaboration at SLAC has been reported. See the review talk by S. Cooper in the proceedings of the International Europhysics Conference on High Energy Physics, Bari, p. 947, 1985

  5. S.F. Biagi et al.: Z. Phys. C — Particles and Fields9, 305 (1981)

    Google Scholar 

  6. M. Bourquin et al.: Nucl. Phys.B453, 13 (1979)

    Google Scholar 

  7. P. Schirato: Ph.D. thesis, Université de Genève (1985), unpublished; S. Biagi et al.: Ξ− andΩ − Inclusive Production in Ξ− Be Interactions. To be published

  8. N. Isgur, G. Karl: Phys. Rev.D 19, 2653 (1979), and references 1–3 therein

    Google Scholar 

Download references

Author information

Author notes

  1. K. P. Streit

    Present address: Physikalisches Institut, Universität Heidelberg, D-6900, Heidelberg, Federal Republic of Germany

  2. H. J. Burckhart

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

  3. S. F. Biagi

    Present address: University of Liverpool, UK

  4. Ch. Doré

    Present address: Ecole Polytechnique Fédérale de Lausanne, Switzerland

  5. T. Modis

    Present address: Digital Equipment Corporation, Geneva, Switzerland

  6. P. Schirato

    Present address: Hôpital Cantonal Universitaire, Geneva, Switzerland

  7. C. Yanagisawa

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

Authors and Affiliations

  1. Queen Mary College, University of London, E14NS, London, UK

    S. F. Biagi

  2. Université de Genève, CH-1211, Geneva, Switzerland

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

  3. Rutherford Appleton Laboratory, Chiton, OX11 0QX, Didcot, UK

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

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

    H. J. Burckhart & H. W. Siebert

  5. Université de Lausane, CH-1015, Lausane, Switzerland

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

  6. H.H. Wills Physics Laboratory, University of Bristol, B58 1TL, Bristols, UK

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

  7. CERN, CH-1211, Genèva 23, Switzerland

    K. P. Streit

Authors
  1. S. F. Biagi
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. M. Bourquin
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. R. M. Brown
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. H. J. Burckhart
    View author publications

    You can also search for this author in PubMed Google Scholar

  5. Ch. Doré
    View author publications

    You can also search for this author in PubMed Google Scholar

  6. P. Extermann
    View author publications

    You can also search for this author in PubMed Google Scholar

  7. M. Gailloud
    View author publications

    You can also search for this author in PubMed Google Scholar

  8. C. N. P. Gee
    View author publications

    You can also search for this author in PubMed Google Scholar

  9. W. M. Gibson
    View author publications

    You can also search for this author in PubMed Google Scholar

  10. R. J. Gray
    View author publications

    You can also search for this author in PubMed Google Scholar

  11. P. Jacot-Guillarmod
    View author publications

    You can also search for this author in PubMed Google Scholar

  12. P. W. Jeffreys
    View author publications

    You can also search for this author in PubMed Google Scholar

  13. T. Modis
    View author publications

    You can also search for this author in PubMed Google Scholar

  14. R. C. Owen
    View author publications

    You can also search for this author in PubMed Google Scholar

  15. J. Perrier
    View author publications

    You can also search for this author in PubMed Google Scholar

  16. K. J. Ragan
    View author publications

    You can also search for this author in PubMed Google Scholar

  17. Ph. Rosselet
    View author publications

    You can also search for this author in PubMed Google Scholar

  18. B. J. Saunders
    View author publications

    You can also search for this author in PubMed Google Scholar

  19. P. Schirato
    View author publications

    You can also search for this author in PubMed Google Scholar

  20. H. W. Siebert
    View author publications

    You can also search for this author in PubMed Google Scholar

  21. V. J. Smith
    View author publications

    You can also search for this author in PubMed Google Scholar

  22. K. P. Streit
    View author publications

    You can also search for this author in PubMed Google Scholar

  23. J. J. Thresher
    View author publications

    You can also search for this author in PubMed Google Scholar

  24. R. Weill
    View author publications

    You can also search for this author in PubMed Google Scholar

  25. A. T. Wood
    View author publications

    You can also search for this author in PubMed Google Scholar

  26. C. Yanagisawa
    View author publications

    You can also search for this author in PubMed Google Scholar

Rights and permissions

Reprints and permissions

About this article

Cite this article

Biagi, S.F., Bourquin, M., Brown, R.M. et al. First observation ofΩ * resonances. Z. Phys. C - Particles and Fields 31, 33–38 (1986). https://doi.org/10.1007/BF01559589

Download citation

  • Received:

  • Revised:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF01559589

Keywords

Search

Navigation