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Abstract |
We face here the problem of uncertainties in correlation functions due to the freedom in the off-shell dependence of the wave functions or, equivalently, off-shell ambiguities in the scattering matrices. We make the study for the case of meson baryon interaction, choosing the K Lambda, K Sigma, and rjN coupled channels, which are related to the N*(1535) resonance, and the K+ K<overline>0 channel related to the a0(980) resonance. We find that, by using realistic interactions based on chiral dynamics, the uncertainties are small, of the order of 2-3%, but could be much bigger if other methods are used. However, our study shows the way to optimally overcome these uncertainties in the analysis of correlation functions, and we provide a series of recommendations for any general analysis. |
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Address |
[Molina, R.] Univ Valencia, CSIC, Parc Cient UV, Dept Fis Teor, C Catedrat Jose Beltran 2, Paterna 46980, Spain, Email: Raquel.Molina@ific.uv.es; |
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