Production of Theta(1540) and Xi Pentaquark States in Proton-Proton Interactions

Abstract

The production of strange pentaquark states (e.g. Theta baryons and Xi^-- states) in hadronic interactions within a Gribov-Regge approach is explored. In this approach the Theta^+(1540) and the Xi Pentaquark are produced by disintegration of remnants formed by the exchange of pomerons between the two protons. We predict the rapidity and transverse momentum distributions as well as the 4 pi multiplicity of the Theta^+, Xi^--, Xi^-, Xi^0 and Xi^+ for sqrt{s} = 17 GeV (SPS) and 200 GeV (RHIC). For both energies more than 10^{-3} Theta^+ and more than 10^{-5} Xi per pp event should be observed by the present experiments.

arXiv commentPredictions for Xi Pentaquarks added. Phys. Lett. B in print

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• Prospects for Pentaquark Production at Meson Factories
• The X(3872) Meson and "Exotic" Spectroscopy at CDF II
• Pentaquarks: review of the experimental evidence
• Production of the pentaquark ${\Theta }^{+}$ in $np$ scattering
• The Observed Correlations for the Strange Multibaryon States in Systems with $\Lambda$-Hyperon from pa Collision at Momentum of 10 Gev/$c$