Magnetic interaction induced by the anomaly in kaon-photoproductions

Abstract

We study the role of magnetic interaction in the photoproduction of the kaon and hyperon. We find that the inclusion of a higher order diagram induced by the Wess-Zumio-Witten term has a significant contribution to the magnetic amplitude, which is compatible to the observed photon asymmetry in the forward angle region. This enables us to use the K^* coupling constants which have been determined in a microscopic way rather than the phenomenological ones which differ largely from the microscopic ones.

8 pages, 3 figures

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• Electromagnetic excitation of the Delta(1232)-resonance
• Diffractive $\varphi$-meson photoproduction on proton near threshold
• Electroproduction of kaons from the proton in a Regge-plus-resonance approach
• Test of the reaction mechanism for gamma N -> K Lambda(1520) using the polarized photon
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Cited by in corpus (2)

• Hidden gauge formalism for the radiative decays of axial-vector mesons
• Photoproduction of Theta^+(1540,1/2^+) reexamined with new theoretical information