Pion distribution amplitude from holographic QCD and the electromagnetic form factor F_pi(Q2)

Details Pion distribution amplitude from holographic QCD and the electromagnetic form factor F_pi(Q2) Pion distribution amplitude from holographic QCD and the electromagnetic form factor F_pi(Q2)

2008-05-07

arxiv.org/abs/0805.0993v1

Phys.Rev.D77:074014,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

Scientific paper

10.1103/PhysRevD.77.074014

The holographic QCD prediction for the pion distribution amplitude (DA) $\phi_{hol}(u)$ is used to compute the pion spacelike electromagnetic form factor $F_{\pi}(Q^2)$ within the QCD light-cone sum rule method. In calculations the pion's renormalon-based model twist-4 DA, as well as the asymptotic twist-4 DA are employed. Obtained theoretical predictions are compared with experimental data and with results of the holographic QCD.

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