Bayesian Model Selection for Electromagnetic Kaon Production on the Nucleon
Nuclear Theory
2011-03-11 v1
Abstract
We present the results of a Bayesian analysis of a Regge model for K+ Lambda 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 (\Delta ln Z ~ 24) for a K+ Lambda 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 chi^2 minimization method, one could not draw this conclusion from the same dataset.
Cite
@article{arxiv.1103.2048,
title = {Bayesian Model Selection for Electromagnetic Kaon Production on the Nucleon},
author = {L. De Cruz and D. G. Ireland and P. Vancraeyveld and J. Ryckebusch},
journal= {arXiv preprint arXiv:1103.2048},
year = {2011}
}
Comments
3 pages; Proceedings 11th International Workshop on Meson Production, Properties and Interaction, Krakow, 2011