Extracting the chiral anomaly from e + e − → 3π

Abstract The strength of the interaction of three pions and a photon, F 3π is predicted by the axial anomaly in terms of the pion decay constant, a relation that is frequently used to constrain low-energy radiative processes involving pions, but only tested experimentally at the 10% level. Here, we...

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Bibliographic Details
Published in:Journal of High Energy Physics
Main Authors: Martin Hoferichter, Bai-Long Hoid, Bastian Kubis
Format: Article
Language:English
Published: SpringerOpen 2025-07-01
Subjects:
Online Access:https://doi.org/10.1007/JHEP07(2025)095