Axial Anomaly and Transition Form Factors

Details Axial Anomaly and Transition Form Factors Axial Anomaly and Transition Form Factors

1993-07-29

arxiv.org/abs/hep-ph/9307366v1

Phys.Rev. D49 (1994) 6096-6100

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 14 pages + 4 figures, (figures are included as uuencoded files), KUNS-1210 HE(TH) 93/07

Scientific paper

10.1103/PhysRevD.49.6096

We investigate the properties of the amplitude induced by the anomaly. In a relatively high energy region those amplitudes are constructed by the vector meson poles and the anomaly terms, in which the anomaly terms can be essentially evaluated by the triangle quark graph. We pay our attention to the anomaly term and make intensive analysis of the existing experimental data, i.e., the electromagnetic $\pi^0$ and $\omega$ transition form factors. Our result shows that it is essential to use the constituent quark mass instead of the current quark mass in evaluating the anomaly term from the triangle graph.

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