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Exclusive Photoproduction of the Cascade (Xi) Hyperons

J. W. Price
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Abstract

We report on the first measurement of exclusive Xi-(1321) hyperon photoproduction in gamma p --> K+ K+ Xi- for 3.2 < E(gamma) < 3.9 GeV. The final state is identified by the missing mass in p(gamma,K+ K+)X measured with the CLAS detector at Jefferson Laboratory. We have detected a significant number of the ground-state Xi-(1321)1/2+, and have estimated the total cross section for its production. We have also observed the first excited state Xi-(1530)3/2+. Photoproduction provides a copious source of Xi's. We discuss the possibilities of a search for the recently proposed Xi5-- and Xi5+ pentaquarks.

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J. W. Price. 2004-09-29. Exclusive Photoproduction of the Cascade (Xi) Hyperons. https://doi.org/10.1103/physrevc.71.058201

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