On the search for a narrow penta-quark Z+-baryon in NN interactions

  • M.V. Polyakov
  • A. Sibirtsev
  • K. Tsushima
  • W. Cassing
  • K. Goeke

Abstract:

The possibility for an observation of a narrow penta-quark Z+-baryon in NN reactions is discussed. It is shown that the pp↦nΣ+K+ reaction at excess energies around 100 MeV above threshold provides optimal conditions for Z+-baryon detection by an analysis of the nK+ invariant mass spectrum, if the Z+ mass is located around 1.5 GeV involving a rather narrow width.

PACS. 12.39.Mk Glueball and nonstandard multiquark/gluon states – 13.75.Cs Nucleon-nucleon interactions – 13.75.Jz Kaon-baryon interactions – 14.20.-c Baryons 
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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2000

Authors and Affiliations

  • M.V. Polyakov
    • 1
  • A. Sibirtsev
    • 2
  • K. Tsushima
    • 3
  • W. Cassing
    • 2
  • K. Goeke
    • 1
  1. 1.Institut für Theoretische Physik II, Ruhr-Universität Bochum, D-44780 Bochum, GermanyDE
  2. 2.Institut für Theoretische Physik, Universität Giessen, D-35392 Giessen, GermanyDE
  3. 3.Special Research Center for the Subatomic Structure of Matter (CSSM) and Department of Physics and Mathematical Physics, University of Adelaide, SA 5005, AustraliaAU

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