  In this talk, we report the theoretical studies of baryon resonances for the
gamma p ---> K*0 Sigma+ and gamma p ---> K*+ Sigma0 reaction processes by
making use of the effective Lagrangian method in the tree-level Born
approximation. The numerical results for the total and differential cross
sections are shown with the presently available data. It turns out that the
contributions from the N* and Delta* resonances are almost negligible near the
threshold energy. On the other hand, the effects of the K exchange in the t
channel and Delta(1232) in the s channel are considerably larger than other
ones in the scattering process, being in good agreement with the experimental
data.
