https://doi.org/10.1007/s10050-000-4511-0
Error estimates for ππ scattering threshold parameters in Chiral Perturbation Theory to two loops
Departamento de Física Moderna, Universidad de Granada, E-18071, Granada, Spain
* e-mail: jmnieves@ugr.es
Received:
28
April
2000
Published online: 11 September 2013
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.
PACS: 11.30.Rd Chiral symmetries – / 11.80.Et Partial-wave analysis – / 12.38.Bx Perturbative calculations – / 13.75.Lb Meson-meson interactions –
© Società Italiana di Fisica and Springer-Verlag, 2000
