Phys. Rev. C 70, 065201 (2004) [15 pages]Phenomenological Lagrangian approach to two kaon photoproduction and pentaquark searchesReceived 16 August 2004; published 10 December 2004 We examine cross sections for the processes γN→NKK̅ in the framework of a phenomenological Lagrangian. We include contributions from Λ and Σ resonances up to spin 3∕2, as well as those from an exotic Θ+. We allow the Θ+ to have spin 1∕2 or 3∕2, with either positive or negative parity in each case. We also allow the state to be either isovector or isoscalar. We find that the scenario that most closely matches observations at Jefferson Laboratory requires a moderately large coupling of the Θ+ to NK*. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.70.065201
DOI:
10.1103/PhysRevC.70.065201
PACS:
13.60.Le, 13.60.Rj
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