Suppression of Θ+(JP=3/2±)-photoproduction from the proton

Abstract We investigate the photoproduction of Θ + from the proton and neutron, γ N → K ¯ Θ + . Assuming that spin and parity of Θ + are J P = 3 / 2 ± , it is shown that the production from the proton is strongly suppressed as compared with that from the neutron. This could provide a possible explanation for the null results of the recent CLAS experiment in finding Θ + via the reaction γ p → K ¯ 0 Θ + .