ChPT calculations of pion formfactors

TL;DR

This paper reviews chiral perturbation theory calculations of pion form factors, including decay constants and transition form factors, highlighting methods and extensions used in the effective theory approach.

Contribution

It provides a comprehensive overview of chiral perturbation theory calculations for pion form factors and discusses extensions like resonance chiral theory and leading logarithm methods.

Findings

Calculated pion decay constant and form factors within chiral perturbation theory

Extended calculations using resonance chiral theory and leading logarithms

Summarized current theoretical approaches and results for pion form factors

Abstract

An overview on chiral perturbation theory calculations of form factors is presented. The main focus is given on the form factors related to the lightest meson, pion, namely: pion decay constant, pion vector and scalar form factor, radiative pion decay and transition form factor. A pure calculation within the effective theory can be extended using further methods, as resonance chiral theory and leading logarithm calculations.