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

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.