K-Lambda and K-Sigma photoproduction in a coupled channels framework
  A coupled channels analysis, based on the K-matrix approach, is presented for photo-induced kaon production. It is shown that channel coupling effects are large and should not be ignored. The importance of contact terms in the analysis, associated with short range correlations, is pointed out. The extracted parameters are compared with SU(3)-model predictions. 
A.Usov, O. Scholten