Measurement of the Differential and Total Cross Sections of the γd → K 0 Λ( p ) Reaction within the Resonance Region

We report the first measurement of differential and total cross sections for the γd → K 0 Λ( p ) reaction, using data from the CLAS detector at the Thomas Jefferson National Accelerator Facility. Data collected during two separate experimental runs were studied with photon-energy coverage 0 . 8 − 3 . 6 GeV and 0 . 5 − 2 . 6 GeV, respectively. The two measurements are consistent giving confidence in the method and determination of systematic uncertainties. The cross sections are compared with predictions from the KAON-MAID theoretical model (without kaon exchange), which deviate from the data at higher W and at forward kaon angles. These data, along with previously published cross sections for K + Λ photoproduction, provide essential constraints on the nucleon resonance spectrum. A first partial wave analysis has been performed that describes the data without the introduction of new resonances.