Pion Compton scattering

in standard χPT

Configuration: "ChPTPhoton2"

•The fourth order loop amplitude

•Generation of topologies and insertion of fields

•Calculation of the amplitude

•Reduction of the amplitude - neutral pions

•Plots - neutral pions

•Reduction of the amplitude - charged pions

•The wave function renormalized second order tree amplitude

•Generation of topologies and insertion of fields

•Calculation of the amplitude

•The fourth order tree amplitude

•Generation of topologies and insertion of fields

•Calculation of the amplitude

•Renormalization - charged pions

•Checks

•Final expression

Converted by Mathematica (July 10, 2003)