We study kaon photoproduction from the nucleon.Using the photon beam asymmetry,we discuss the couplings of the K and K* mesons with baryons.In previous studies of photoproductions,the K* coupling strength has been treated as parameters to reproduce experimental data.Here instead we propose to use the coupling strength which is derived from a microscopic description.By including a higher order loop contribution induced by the QCD anomaly,we demonstrate that the experimental data can be explained well.The use of a microscopic description enables us a better understanding of the reaction dynamics which provides further basis of hadron dynamics.
展开▼
