Extracting the chiral anomaly from gamma pi --> pi pi
High Energy Physics - Phenomenology
2012-12-20 v2 High Energy Physics - Experiment
Nuclear Experiment
Nuclear Theory
Abstract
We derive dispersive representations for the anomalous process gamma pi --> pi pi with the pi pi P-wave phase shift as input. We investigate how in this framework the chiral anomaly can be extracted from a cross-section measurement using all data up to 1 GeV, and discuss the importance of a precise representation of the gamma pi --> pi pi amplitude for the hadronic light-by-light contribution to the anomalous magnetic moment of the muon.
Keywords
Cite
@article{arxiv.1210.6793,
title = {Extracting the chiral anomaly from gamma pi --> pi pi},
author = {Martin Hoferichter and Bastian Kubis and Dimitrios Sakkas},
journal= {arXiv preprint arXiv:1210.6793},
year = {2012}
}
Comments
10 pages, 3 figures; version published in Phys. Rev. D