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Determination of Low Energy Constants and testing Chiral Perturbation Theory at order $p^6$ (NNLO)

Authors
  • Bijnens, Johan
  • Jemos, Ilaria
Type
Published Article
Publication Date
Sep 24, 2009
Submission Date
Sep 24, 2009
Source
arXiv
License
Yellow
External links

Abstract

We present the results of a search for relations between observables that are independent of the Chiral Perturbation Theory (ChPT) Next-to-Next-to-Leading Order (NNLO) Low-Energy Constants (LECs). We have found some relations between observables in $\pi\pi$, $\pi K$ scattering and $K_{l4}$ decay which have been evaluated numerically using fit 10 in \cite{Amoros:2001cp} for the NLO LECs. We also show some preliminary results for a new global fit of the NLO LECs

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