Bayesian inference of the resonance content of p(gamma,K^+)Lambda

Details Bayesian inference of the resonance content of p(gamma,K^+)Lambda Bayesian inference of the resonance content of p(gamma,K^+)Lambda

2011-11-28

arxiv.org/abs/1111.6511v2

Physics

Nuclear Physics

Nuclear Theory

5 pages, 3 figures

Scientific paper

A Bayesian analysis of the world's p(gamma,K^+)Lambda data is presented. From the proposed selection of 11 resonances, we find that the following nucleon resonances have the highest probability of contributing to the reaction: S11(1535), S11(1650), F15(1680), P13(1720), D13(1900), P13(1900), P11(1900), and F15(2000). We adopt a Regge-plus-resonance framework featuring consistent couplings for nucleon resonances up to spin J=5/2. We evaluate all possible combinations of 11 candidate resonances. The best model is selected from the 2048 model variants by calculating the Bayesian evidence values against the world's p(gamma,K^+)Lambda data.

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