A Method to Unambiguously Determine the Parity of the Theta+ Pentaquark

Abstract

With the recent discovery of the $\Theta (1540)$ pentaquark, the question of its parity is paramount since this will constrain the correct description of its internal structure. We show that the measurement of the spin singlet and triplet cross sections for the reaction $\vec{p}\vec{p}\to {\Sigma }^{+}{\Theta }^{+}$ will unambiguously determine the parity of the ${\Theta }^{+}$.

arXiv comment3 pages

References in corpus (5)

• Evidence for Narrow S=+1 Baryon Resonance in Photo-production from Neutron
• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• Observation of an Exotic $S=+1$ Baryon in Exclusive Photoproduction from the Deuteron
• Observation of a baryon resonance with positive strangeness in K+ collisions with Xe nuclei
• Pentaquark hadrons from lattice QCD

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