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arXiv · hep-ph/9605232

The axial anomaly and the conversion of gluons into photons

M. M. Musakhanov·F. C. Khanna
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Abstract

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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M. M. Musakhanov, F. C. Khanna. 1996-05-06. The axial anomaly and the conversion of gluons into photons. https://arxiv.org/abs/hep-ph/9605232

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