PHOTON-PHOTON SCATTERING, PION POLARIZABILITY, AND CHIRAL-SYMMETRYPHYSICAL REVIEW D
AbstractRecent 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.
Citation InformationJF Donoghue and BR Holstein. "PHOTON-PHOTON SCATTERING, PION POLARIZABILITY, AND CHIRAL-SYMMETRY" PHYSICAL REVIEW D Vol. 48 Iss. 1 (1993)
Available at: http://works.bepress.com/barry_holstein/162/