Unitarity, Chiral Perturbation Theory, and Meson Form Factors

Details Unitarity, Chiral Perturbation Theory, and Meson Form Factors Unitarity, Chiral Perturbation Theory, and Meson Form Factors

1996-11-12

arxiv.org/abs/hep-ph/9611307v1

Phys.Rev. D54 (1996) 4648-4653

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 5 figs, uses REVTeX and epsfig.sty

Scientific paper

10.1103/PhysRevD.54.4648

The inverse-amplitude method is applied to the one-loop chiral expansion of the pion, kaon, and $K_{l3}$ form factors. Since these form factors are determined by the same chiral low-energy constants, it is possible to obtain finite predictions for the inverse-amplitude method. It is shown that this method clearly improves one-loop chiral perturbation theory, and a very good agreement between the inverse-amplitude method and the experimental information is obtained. This suggests that the inverse-amplitude method is a rather systematic way of improving chiral perturbation theory.

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