A test of the instanton vacuum with low-energy theorems of the axial anomaly

Details A test of the instanton vacuum with low-energy theorems of the axial anomaly A test of the instanton vacuum with low-energy theorems of the axial anomaly

2002-06-24

arxiv.org/abs/hep-ph/0206233v3

Phys.Lett.B572:181-188,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, no figure, final version which will appear in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2003.08.022

We revisit the QCD+QED axial anomaly low-energy theorems which give an exact relation between the matrix elements of the gluon and photon parts of the axial anomaly operator equation within the framework of the {\em effective action} derived from the instanton vacuum. The matrix elements between the vacuum and two photon states and between the vacuum and two gluon states are investigated for arbitrary $N_f $ in the chiral limit. Having gauged the effective action properly, we show that the model does exactly satisfy the low-energy theorems.

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