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arXiv · hep-ph/9302203

Photon-Photon Scattering, Pion Polarizability and Chiral Symmetry

John F. Donoghue·Barry R. Holstein
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Abstract

Recent attempts to detect the pion polarizability via analysis of $γγ\rightarrowππ$ 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.

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John F. Donoghue, Barry R. Holstein. 1993-02-02. Photon-Photon Scattering, Pion Polarizability and Chiral Symmetry. https://doi.org/10.1103/physrevd.48.137

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