The axial anomaly and the conversion of gluons into photons

Details The axial anomaly and the conversion of gluons into photons The axial anomaly and the conversion of gluons into photons

1996-05-06

arxiv.org/abs/hep-ph/9605232v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

gzip, tar, latex, 11 pages, 2 eps figures

Scientific paper

The axial anomaly in the divergence of the singlet axial current in QCD $+$ QED leads to low-energy theorems for the matrix element of this operator equation over vacuum and two--photon states and for the matrix element over vacuum and two--gluon states. The solution of these theorems is related only to the nonperturbative phenomena. These matrix elements are calculated in instanton vacuum generated N-JL type quark model for arbitrary $N_f .$ It is shown that this model does satisfy the low-energy theorems.

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