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Pion Coupling to Nuclei
Author(s) -
Dumbrajs Olgierd
Publication year - 1981
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/prop.19810291004
Subject(s) - pion , extrapolation , physics , coupling (piping) , particle physics , coupling constant , differential (mechanical device) , dispersion relation , nuclear physics , nucleus , quantum electrodynamics , variable (mathematics) , quantum mechanics , mathematics , mathematical analysis , engineering , thermodynamics , mechanical engineering , biology , microbiology and biotechnology
The concept of the pion‐nucleus coupling constants is discussed. Methods of their determination are reviewed. These include: forward dispersion relations, extrapolation of differential cross sections to the poles in the angular variable, analysis of data on electromagnetic form factors with the use of the PCAC and CVC hypotheses, pion photoproduction at threshold and low‐ernergy theorems. Our present knowledge of the pion coupling to the He, Li, Be, C, N and O nuclei is summarized.