Chiral perturbation theory

Details Chiral perturbation theory Chiral perturbation theory

1996-08-05

arxiv.org/abs/hep-ph/9608226v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

36 pages, Latex, 4 figures embedded with epsfig.sty. To appear in Proc. of 5th Workshop on Hadron Physics, Angra dos Reis, RJ,

Scientific paper

After a general introduction to the structure of effective field theories, the main ingredients of chiral perturbation theory are reviewed. Applications include the light quark mass ratios and pion-pion scattering to two-loop accuracy. In the pion-nucleon system, the linear sigma model is contrasted with chiral perturbation theory. The heavy-nucleon expansion is used to construct the effective pion-nucleon Lagrangian to third order in the low-energy expansion, with applications to nucleon Compton scattering.

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