6533b836fe1ef96bd12a0a77

RESEARCH PRODUCT

Reply to “Comment on ‘Polarizability of the pion: No conflict between dispersion theory and chiral perturbation theory’”

B. PasquiniDieter DrechselStefan Scherer

subject

PhysicsNuclear and High Energy PhysicsChiral perturbation theoryNuclear Theorynucl-thMesonHigh Energy Physics::LatticeNuclear TheoryFOS: Physical scienceshep-phElementary particleChirality (electromagnetism)Nuclear Theory (nucl-th)High Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)PionPolarizabilityDispersion relationQuantum electrodynamicsQuantum mechanicsPerturbation theory

description

We show that the alleged discrepancies between chiral perturbation theory (ChPT) and dispersion theory, reported for the polarizability of the pion by Fil'kov and Kashevarov [Phys. Rev. C 72, 035211 (2005)], result from applying dispersion theory to nonanalytic functions.

https://doi.org/10.1103/physrevc.81.029802