Suppression of Theta^+(J^P=3/2^(+,-)) photoproduction from the proton
  We investigate the photoproduction of Theta^+ from the proton and neutron, gamma N -> Kbar Theta^+. Assuming that spin and parity of Theta^+ 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 Theta^+ via the reaction gamma p -> Kbar^0 Theta^+. 
Seung-Il Nam (RCNP, Osaka Univ., Japan and Dept. of Phys. & NuRI,   Pusan Univ., Korea), Atsushi Hosaka (RCNP, Osaka Univ., ...