K*-couplings for the antidecuplet excitation

Abstract

We estimate the coupling of the K* vector meson to the N-->Theta+ transition employing unitary symmetry, vector meson dominance, and results from the GRAAL Collaboration for eta photoproduction off the neutron. Our small numerical value for the coupling constant is consistent with the non-observation of the Theta+ in recent CLAS searches for its photoproduction. We also estimate the K*-coupling for the N-->Sigma* excitation, with Sigma* being the Sigma-like antidecuplet partner of the Theta+-baryon.

9 pages, 1 figure. Minor changes in text and abstract, references added; version to appear in Phys. Rev. D

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• Properties of baryon anti-decuplet
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Cited by in corpus (6)

• Evidence of the Θ^+ in the γd \to K^+K^-pn reaction
• Axial-vector transitions and strong decays of the baryon antidecuplet in the self-consistent SU(3) chiral quark-soliton model
• Vector transition form factors of the $N{K}^{\ast }\to {\Theta }^{+}$ and $N{\bar{K}}^{\ast }\to {\Sigma }_{\overline{10}}^{\ast -}$ in the SU(3) chiral quark-soliton model
• To see the exotic Theta^+ baryon from interference
• Vector and axial-vector structures of the Theta^+
• Photoproduction of Theta^+(1540,1/2^+) reexamined with new theoretical information