Pion form factor and QCD sum rules: case of axial current

Details Pion form factor and QCD sum rules: case of axial current Pion form factor and QCD sum rules: case of axial current

2004-03-22

arxiv.org/abs/hep-ph/0403240v2

Phys.Lett. B591 (2004) 267-276

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX file, 10 pages, 5 figures, v2: added check of Ward identity constrains at Q^2=0, the continuum thresholds are determined

Scientific paper

10.1016/j.physletb.2004.04.029

We present an analysis of QCD sum rules for pion form factor in next-to-leading order of perturbation theory for the case of axial-vector pion currents. The theoretical predictions for Q^2-dependence of pion form factor are in good agreement with available experimental data. It is shown, that NLO corrections are large in this case and should be taken into account in rigorous theoretical analysis.

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