Determination of Low Energy Constants and testing Chiral Perturbation Theory at Next to Next to Leading Order

Details Determination of Low Energy Constants and testing Chiral Perturbation Theory at Next to Next to Leading Order Determination of Low Energy Constants and testing Chiral Perturbation Theory at Next to Next to Leading Order

2009-04-23

arxiv.org/abs/0904.3705v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

7 pages

Scientific paper

We present the results of a search for relations between observables that are
independent of the Chiral Pertubation 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 the old fit (fit 10 in [1] of the NLO LECs.

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