Error estimates for pi-pi scattering threshold parameters in Chiral Perturbation Theory to two loops

Details Error estimates for pi-pi scattering threshold parameters in Chiral Perturbation Theory to two loops Error estimates for pi-pi scattering threshold parameters in Chiral Perturbation Theory to two loops

1999-06-21

arxiv.org/abs/hep-ph/9906437v3

Eur.Phys.J.A8:377-384,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 2 tables, 3 figures. Numerics upgraded to v2 of ref.(8). New reference added. Typos corrected. New figure for SU(3)

Scientific paper

10.1007/s10050-000-4511-0

Using the analysis of ChPT to two loops, we perform an error analysis of the threshold and low energy parameters, based on the uncertainties for the one loop low energy parameters and the resonance saturation mechanism. Different sets of one loop low energy constants have been considered.Thus, the predictive power of the effective field theory is quantified on the basis of the present experimental uncertainties.

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