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Kaon photoproduction: background contributions, form factors and missing resonances
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The photoproduction p(gamma, K+)Lambda process is studied within a field-theoretic approach. It is shown that the background contributions constitute an important part of the reaction dynamics. We compare predictions obtained with three plausible techniques for dealing with these background contributions. It appears that the extracted resonance parameters drastically depend on the applied technique. We investigate the implications of the corrections to the functional form of the hadronic form factor in the contact term, recently suggested by Davidson and Workman (Phys. Rev. C 63, 025210). The role of background contributions and hadronic form factors for the identification of the quantum numbers of ``missing'' resonances is discussed.
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Cited by 1 Pith paper
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New Isobar Models for $K^+\Lambda$ Electroproduction
Two isobar models with high-spin baryon resonances and modified electromagnetic form factors fit CLAS K+Lambda electroproduction data with chi-square per point of 2.16.
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