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

M. V. Polyakov·A. Sibirtsev·K. Tsushima·W. Cassing·K. Goeke
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Abstract

The possibility for an observation of a narrow penta-quark $Z^+$ baryon in $NN$ reactions is discussed. It is shown that the $pp{\to}nΣ^+K^+$ 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.

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M. V. Polyakov, A. Sibirtsev, K. Tsushima, W. Cassing, K. Goeke. 1999-09-19. On the search for a narrow penta-quark Z$^+$ baryon in NN interactions. https://doi.org/10.1007/s100500070061

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