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Johan Bijnens, Ilaria Jemos
Determination of Low Energy Constants and testing Chiral
Perturbation Theory at order $p^6$ (NNLO)
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
LU TP 09-24
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