Bayesian model selection for electromagnetic kaon production on the nucleon

De Cruz, L., Ireland, D. G. , Vancraeyveld, P. and Ryckebusch, J. (2011) Bayesian model selection for electromagnetic kaon production on the nucleon. International Journal of Modern Physics A, 26(03n04), pp. 642-644. (doi: 10.1142/S0217751X11052323)

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We present the results of a Bayesian analysis of a Regge model for K+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 (Δ ln Ƶ ≈ 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.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Ireland, Professor David
Authors: De Cruz, L., Ireland, D. G., Vancraeyveld, P., and Ryckebusch, J.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:International Journal of Modern Physics A
Publisher:World Scientific Publishing
ISSN (Online):1793-656X

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