Threshold production of the ${\Theta }^{+}$ in a polarized proton reaction

Abstract

We compute cross sections of ${\Theta }^{+}$ production near threshold for a polarized proton reaction, $\vec{p}\vec{p}\to {\Sigma }^{+}{\Theta }^{+}$ which was recently proposed to determine unambiguously the parity of ${\Theta }^{+}$. Within theoretical uncertainties cross sections for the allowed spin configuration are estimated; it is of order of one microbarn for the positive parity ${\Theta }^{+}$ and about 1/10 microbarn for the negative parity ${\Theta }^{+}$ in the threshold energy region where the s-wave component dominates.

arXiv comment6 pages, 7 figures

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Cited by in corpus (9)

• How to measure the parity of the ${\Theta }^{+}$ in $\vec{p}\vec{p}$ collisions
• On the determination of the parity of the ${\Theta }^{+}$
• Phenomenology of spin 3/2 baryons with pentaquarks
• Production of the pentaquark ${\Theta }^{+}$ in $np$ scattering
• Structure and reactions of pentaquark baryons
• Determination of the parity of the pentaquark baryons : Theta^+ and Xi_5
• Spin correlations in the reaction "pi \vec D --> \vecΣΘ^+" and the parity of Theta^+
• Angular distribution and azimuthal asymmetry for pentaquark production in proton-proton collisions
• Remarks on the parity determination of narrow resonances