Martin Zdrahal (Praha):
Dispersive Approach to Chiral Perturbation Theory
We have generalised the reconstruction theorem of
Stern, Sazdjian and Fuchs based on the dispersion relations to the case of the (2→2)
scattering of all the pseudoscalar octet mesons (π, K, η). This theorem was used to
obtain the amplitudes of all such processes to the one-loop order independently on the
particular power-counting scheme of the chiral perturbation theory in question.