Photoproduction of ${\Theta }^{+}$ and other pentaquark states

Abstract

We present constraints on the {\it relative} photoproduction cross sections of positive parity pentaquark states, ${\Sigma }_5$, ${\Lambda }_5$, and $N_5$, based on a minimum phenomenology gained in $\gamma N\to K{\Theta }^{+}$ and their baryon-meson couplings as in the work of Close and Dudek. The possibility of anomalous signals in $\gamma p\to K_S^0({\Theta }^{+};{\Sigma }_d^{+})$ is discussed. We emphasise the importance of comparing $\gamma N\to K{\Theta }^{+}$ with "conventional" states such as $\gamma N\to K\Sigma (1660)$.

arXiv comment11 pages, including 3 tables and 7 figures

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Cited by in corpus (13)

• Coherent Theta^+ and Lambda(1520) photoproduction off the deuteron
• Hadron Spectroscopy (theory): Diquarks, Tetraquarks, Pentaquarks and no quarks
• Three-body hadronic structure of low-lying $1/2^{+}$ $\Sigma$ and $\Lambda$ resonances
• A Phenomenological Lagrangian Approach to Two Kaon Photoproduction and Pentaquark Searches
• Photoproduction of the Theta^+ resonance on the nucleon in a Regge model
• K*-couplings for the antidecuplet excitation
• Heavy Quark Analogues of the Theta and Their Excitations
• Some aspects of ${\Theta }^{+}$ parity determination in the reaction $\gamma N\to {\Theta }^{+}\bar{K}\to NK\bar{K}$
• Photoproduction and Radiative Decay of Spin 1/2 and 3/2 Pentaquarks
• Heavy Antiquark Pentaquarks in the CM and GB Models
• Angular distribution and azimuthal asymmetry for pentaquark production in proton-proton collisions
• ${\Theta }^{+}$-pentaquark parity from associative baryon production in $\pi D$ collisions, ${\pi }^{\pm }+D\to {\Theta }^{+}+{\Sigma }^{\pm }$
• Constituent quark models and pentaquark baryons