Production of Theta+ in gamma + D -> Lambda + Theta+ and gamma + D -> Sigma + Theta+ reactions

Abstract

The gamma + D -> Lambda + Theta+ and gamma + D -> Sigma + Theta+ reactions can be used to determine the width of Theta+ almost model-independently. We calculate the differential cross sections of the gamma +D -> Lambda + Theta+, gamma + D -> Sigma + Theta+ and relevant background reactions in the photon energy range 1.2 < E_γ < 2.6 GeV. We determine the most favorable kinematic conditions and observables for the experimental studies of Theta+ in the considered processes. We argue that a comparison of the gamma + D -> Lambda + Theta+ and gamma + D -> Sigma + Theta+ cross sections should unambiguously determine isospin of Theta+.

22 pages, 9 figures. Final published version

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Cited by in corpus (9)

• Search for the Theta+ pentaquark in the gamma d -> Lambda n K+ reaction measured with CLAS
• Coherent Theta^+ and Lambda(1520) photoproduction off the deuteron
• Pentaquarks: review of the experimental evidence
• Theta+ formation in inclusive gamma D -> pK- X
• Pentaquark, cusp and rescattering in single kaon photoproduction off deuterium
• To see the exotic Theta^+ baryon from interference
• Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP
• The Observed Correlations for the Strange Multibaryon States in Systems with $\Lambda$-Hyperon from pa Collision at Momentum of 10 Gev/$c$
• Spin correlations in the reaction "pi \vec D --> \vecΣΘ^+" and the parity of Theta^+