We report on the first measurement of exclusive Ξ-(1321) hyperon photoproduction in γp→K+K+Ξ- for 3.2<Eγ<3.9 GeV. The final state is identified by the missing mass in p(γ,K+K+)X measured with the CLAS detector at Jefferson Laboratory. We have detected a significant number of the ground state Ξ-(1321)12+ and have estimated the total cross section for its production. We also have strong evidence for the first excited state Ξ-(1530)32+. Photoproduction provides a copious source of Ξ's. We discuss the possibilities of a search for the recently proposed Ξ5- and Ξ5+ pentaquarks.
|Journal||Physical Review C - Nuclear Physics|
|State||Published - May 2005|
ASJC Scopus subject areas
- Nuclear and High Energy Physics