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On the search for a narrow penta-quark Z+-baryon in NN interactions |
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| Authors: | M.V. Polyakov A. Sibirtsev K. Tsushima W. Cassing K. Goeke |
| Affiliation: | Institut für Theoretische Physik II, Ruhr-Universit?t Bochum, D-44780 Bochum, Germany, DE Institut für Theoretische Physik, Universit?t Giessen, D-35392 Giessen, Germany, DE Special Research Center for the Subatomic Structure of Matter (CSSM) and Department of Physics and Mathematical Physics, University of Adelaide, SA 5005, Australia, AU |
| 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. Received: 24 May 2000 / Accepted: 3 August 2000 |
| Keywords: | 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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