Photon-photon scattering, pion polarizability, and chiral symmetry
- 1 July 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 48 (1), 137-146
- https://doi.org/10.1103/physrevd.48.137
Abstract
Recent attempts to detect the pion polarizability via analysis of measurements are examined. The connection between calculations based on dispersion relations and on chiral perturbation theory is established by matching the low-energy chiral amplitude with that given by a full dispersive treatment. Using the values for the polarizability required by chiral symmetry, predicted and experimental cross sections are shown to be in agreement.
Keywords
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