Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2000-12-04
Eur.Phys.J.C19:517-528,2001
Physics
High Energy Physics
High Energy Physics - Phenomenology
20 pages, LaTeX2e; replaced with version to appear in European Physical Journal C; typographical errors removed, minor stylist
Scientific paper
10.1007/s100520100629
We establish the framework for the comparison of $\pi K$ scattering amplitudes from SU(3) chiral perturbation theory with suitable dispersive representations which result from the combination of certain fixed-t dispersion relations with dispersion relations on hyperbolic curves. This allows for predictions for some combinations of low energy constants appearing in higher order calculations of chiral perturbation theory. Using a simple parametrization for the lowest partial waves, first estimates for some combinations are presented.
Ananthanarayan Balasubramanian
Büttiker Paul
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