TY - JOUR A1 - Polyakov, Maxim V. A1 - Weidl, Galia T1 - Chiral expansion in the dual (string) model of the Goldstone meson scattering T2 - High Energy Physics - Phenomenology N2 - We consider in details the dual models for the Goldstone mesons (pions) scattering in the presence of the explicit chiral symmetry breaking caused by non-zero current quark mass. New method of incorporation of the quark masses into the dual model is suggested. In contrast to the previously considered in the literature methods, the dual amplitude obtained by this method is consistent with all low-energy theorems following from the Effective Chiral Lagrangian (EChL) to the O(p^4) order and simultaneously it does not contain states with negative width. The resonance spectrum of the model and its implications for the fourth and sixth order EChL in large N_c limit are discussed. We argue that the possible relations between large N_c QCD and some underlying string theory can be revealed by studying interactions of hadrons at low-energies. KW - Chiral expansion KW - dual string models KW - Goldstone meson scattering KW - Stringtheorie Y1 - 1996 UR - https://opus4.kobv.de/opus4-h-ab/frontdoor/index/index/docId/2191 UR - https://www.researchgate.net/publication/2034505_Chiral_expansion_in_the_dual_string_model_of_the_Goldstone_meson_scattering#fullTextFileContent VL - 1997 IS - 0/0 SP - 1 EP - 13 ER -