BAYESIAN MODEL SELECTION FOR ELECTROMAGNETIC KAON PRODUCTION ON THE NUCLEON

We present the results of a Bayesian analysis of a Regge model forK+Λ photoproduction. The model is based on the exchange of K+(494) and K∗+(892) trajectories in the t-channel. For different prior widths, we find decisive Bayesian evidence ( ∆ lnZ ≈ 24) for a K+Λ photoproduction Regge model with a positive vector coupling and a negative tensor coupling constant for the K∗+(892) trajectory, and a rotating phase factor for both trajectories. Using the χ2 minimization method, one could not draw this conclusion from the same dataset