CERN-TH . 6978 / 93 INTRODUCTION TO CHIRAL PERTURBATION THEORY

An introduction to the basic ideas and methods of Chiral Perturbation Theory is presented. Several phenomenological applications of the effective Lagrangian technique to strong, electromagnetic and weak interactions are discussed. Lectures given at the V Mexican School of Particles and Fields Guanajuato, México, December 1992 ∗ On leave of absence from Departament de F́ısica Teòrica, Universitat de València, and IFIC, Centre Mixte Universitat de València–CSIC, E-46100 Burjassot, València, Spain. † Work supported in part by CICYT (Spain), under grant No. AEN90-0040. CERN-TH.6978/93 August 1993 INTRODUCTION TO CHIRAL PERTURBATION THEORY A. Pich∗† Theory Division, CERN, CH-1211 Geneva 23