Journal or Book Title
PHYSICAL REVIEW D
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.
Donoghue, JF and Holstein, BR, "PHOTON-PHOTON SCATTERING, PION POLARIZABILITY, AND CHIRAL-SYMMETRY" (1993). PHYSICAL REVIEW D. 143.
Retrieved from https://scholarworks.umass.edu/physics_faculty_pubs/143