Suppression of Theta^+(J^P=3/2^(+,-)) photoproduction from the proton

Atsushi Hosaka (RCNP; Dept. of Phys. & NuRI; Hyun-Chul Kim (Dept. of Phys. & NuRI; Japan; Japan); Korea); Osaka Univ.; Pusan Univ.; Seung-Il Nam (RCNP

arxiv: hep-ph/0505134 · v2 · submitted 2005-05-16 · ✦ hep-ph

Suppression of Theta^+(J^P=3/2^(+,-)) photoproduction from the proton

Seung-Il Nam (RCNP , Osaka Univ. , Japan , Dept. of Phys. & NuRI , Pusan Univ. , Korea) , Atsushi Hosaka (RCNP , Japan)

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Hyun-Chul Kim (Dept. of Phys. & NuRI

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classification ✦ hep-ph

keywords thetaprotongammakbarneutronphotoproductionassumingclas

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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^+.

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Suppression of Theta^+(J^P=3/2^(+,-)) photoproduction from the proton

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