Evidence for a missing nucleon resonance in kaon photoproduction - art. no. 012201

New SAPHIR p(gamma,K+)Lambda total cross section data show a resonance stru cture at a total c.m. energy around 1900 MeV. We investigate this feature w ith an isobar model and find that the structure can be well explained by in cluding a new D-13 resonance at 1895 MeV. Such a state has been predicted b y a relativistic quark model at 1960 MeV with significant gamma N and K Lam bda branching ratios. We demonstrate how the measurement of the photon asym metry can be used to further study this resonance. In addition, verificatio n of the predicted large decay widths into the eta N and eta'N channels wou ld allow distinguishing between other nearby D-13 states.