Phys. Rev. C 61, 012201(R) (1999) [4 pages]Evidence for a missing nucleon resonance in kaon photoproduction
New SAPHIR p(γ,K+)Λ total cross section data show a resonance structure at a total c.m. energy around 1900 MeV. We investigate this feature with an isobar model and find that the structure can be well explained by including a new D13 resonance at 1895 MeV. Such a state has been predicted by a relativistic quark model at 1960 MeV with significant γN and KΛ branching ratios. We demonstrate how the measurement of the photon asymmetry can be used to further study this resonance. In addition, verification of the predicted large decay widths into the ηN and η′N channels would allow distinguishing between other nearby D13 states. © 1999 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.61.012201
DOI:
10.1103/PhysRevC.61.012201
PACS:
14.20.Gk, 25.20.Lj, 13.60.Le, 13.30.Eg
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