Publication Date

1993

Journal or Book Title

PHYSICAL REVIEW D

Abstract

Recent attempts to detect the pion polarizability via analysis of γγ→ππ 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.

Comments

This is the pre-published version which is collected from arXiv. The published version is at http://prd.aps.org/abstract/PRD/v48/i1/p137_1

Volume

48

Pages

137-146

Issue

1

Included in

Physics Commons

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