2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/42198We calculate the amplitude of pi-eta scattering in generalized chiral perturbation theory at the order O(p^4) and present preliminary results of the numerical analysis of the S-wave scattering length, which seems to be particularly sensitive to the deviations from the standard case.7 pages, 2 figures, Talk presented at Int. Conf. Hadron Structure '02, Herlany, Slovakia, September 22-27, 2002. Typos and one reference correctedHigh Energy Physics - Phenomenologytext