Two-photon production ofK* [kbar]* at the argus

Abstract Two photon production of K + π−K − π+, K0 sπ0K±π± and K0 sK0 sπ+π − has been studied using the ARGUS detector at the e+e− storage ring DORIS II at DESY. The data are analysed by using the maximum likelihood method. Vector pair production in two-photon interactions was studied in two channels:γγ → K*0→*0 and γγ → K*+ K*−. Two photon production of γγ → K*0[kbar]*0 was investigated by analysing the K +π− K−π+ and K0 sπ0K±π± final states. The closely related reaction γγ→πeK*+ K*− was studied by analysing the final states K*0K ±π±π0and K0 sK0 s π±π−. The partial wave analysis of K*0[kbar]*0was performed using data from the K +π− K −π + final state. It was found that the reaction is dominated by the partial wave with spin, parity and helicity(JP, Jz ) = (2+, 2).