Compilation of Coupling Constants and Low-Energy Parameters. 1978 Edition
About: This article is published in Nuclear Physics.The article was published on 1979-01-01. It has received 263 citations till now. The article focuses on the topics: Coupling constant & Weak interaction.
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TL;DR: In this paper, the authors construct the generating functional of U(3)×U(3), which allows them to calculate the Green functions up to and including terms of order p4 (at fixed radio m quark p 2 ) in terms of a few coupling constants which chiral symmetry leaves undetermined.
2,883 citations
TL;DR: In this article, the strong interactions of low-lying meson resonances (spin ⩽ 1) with the octet of pseudoscalar mesons ( π, K, η ) are considered to lowest order in the derivative expansion of chiral SU(3).
1,239 citations
TL;DR: In the low-energy frontier, the main goal is to perform precision tests of the standard theory and to make up for the smaller energies, high sensitivity is an indispensable requirement (factories).
455 citations
TL;DR: In this article, the basic concepts of chiral perturbation theory are discussed and a general introduction to the empirical and theoretical foundations which led to the development of Chirr-Perturbation Theory is provided.
Abstract: This article provides a pedagogical introduction to the basic concepts of chiral perturbation theory and is designed as a text for a two-semester course on that topic. Section 1 serves as a general introduction to the empirical and theoretical foundations which led to the development of chiral perturbation theory. Section 2 deals with QCD and its global symmetries in the chiral limit; the concept of Green functions and Ward identities reflecting the underlying chiral symmetry is elaborated. In Section 3 the idea of a spontaneous breakdown of a global symmetry is discussed and its consequences in terms of the Goldstone theorem are demonstrated. Section 4 deals with mesonic chiral perturbation theory and the principles entering the construction of the chiral Lagrangian are outlined. Various examples with increasing chiral orders and complexity are given. Finally, in Sect. 5 the methods are extended to include the interaction between Goldstone bosons and baryons in the single-baryon sector, with the main emphasis put on the heavy-baryon formulation. At the end, the method of infrared regularization in the relativistic framework is discussed.
452 citations
CERN1
TL;DR: In this paper, it has been realized that there must be corrections to this simple picture, for example, the meson exchange effects which preclude a simple interpretation of the magnetic moment of the deuteron in terms of d-state probability.
Abstract: Classical nuclear theory deals with a many-body system of neutrons and protons interacting nonrelativistically through two-body potentials. It has, of course, long been realized that there must be corrections to this simple picture—for example, the meson exchange effects which preclude a simple interpretation of the magnetic moment of the deuteron in terms of d-state probability. Nevertheless, the availability of beams of pions, and the consequent ability to study the excitation of real isobars in nuclei, has been critical in the realization that for many problems one must develop a theoretical model which explicitly includes pion and isobar degrees of freedom (see, for example, the proceedings of recent topical conferences Cat+ 82, MT 80).
428 citations