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hep-ph2007★ 11 cited
Theoretical progress on cusp effect and Kl4 decays
J. Gasser
The cusp effect in K \to 3πand data on K_e4 decays allow one to extract experimental information on the elastic ππscattering amplitude near threshold, and to confront the outcome o…
hep-ph1994
Chiral Perturbation Theory
J. Bijnens, G. Ecker, J. Gasser
An introduction to Chiral Perturbation Theory is given including a discussion of power counting, the Wess-Zumino term, the values of the coupling constants and the inclusion of the…