Electromagnetic form-factor of the $π$ meson with light-cone QCD sum rules

Details Electromagnetic form-factor of the $π$ meson with light-cone QCD sum rules Electromagnetic form-factor of the $π$ meson with light-cone QCD sum rules

2007-11-19

arxiv.org/abs/0711.2921v5

Int.J.Mod.Phys.A23:4621-4636,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, 3 figures, 5 version

Scientific paper

10.1142/S0217751X08041499

In this article, we calculate the electromagnetic form-factor of the $\pi$ meson with the light-cone QCD sum rules. The numerical value $F_\pi^{p}(0) =0.999\pm 0.001$ is in excellent agreement with the experimental data (extrapolated to the limit of zero momentum transfer, or the normalization condition $F_\pi(0)=1$). For large momentum transfers, the values from the two sum rules are all comparable with the experimental data and theoretical estimations.

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