Pion-Pion Scattering in Chiral Perturbation and Dispersion Relation Theories

Details Pion-Pion Scattering in Chiral Perturbation and Dispersion Relation Theories Pion-Pion Scattering in Chiral Perturbation and Dispersion Relation Theories

1999-02-25

arxiv.org/abs/hep-ph/9902461v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk at the "Frontiers of Fundamental Physics" Symposium, B. M. Birla Science Centre, Hyderabad, India, December 30, 1

Scientific paper

Chiral perturbation theory, the low energy effective theory of the strong interactions for the light pseudoscalar degrees of freedom, is based on effective Lagrangian techniques and is an expansion in the powers of the external momenta and the powers of the quark masses, which correct the soft-pion theorems. Our primary emphasis will be on the problem of $\pi\pi$ scattering. After briefly reviewing these features and some results, we review some features of $\pi-N$ scattering.

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