Higher twist distribution amplitudes of the pion and electromagnetic form factor $F_{\pi }(Q^2)$

Abstract

The pion electromagnetic form factor is calculated within the QCD light-cone sum rule method and using a renormalon model for the higher twist distribution amplitudes (DAs). The theoretical predictions are compared with the experimental data and constraints on the pion leading and twist-4 DAs are extracted. An upper bound on the twist-4 contribution to the form factor and estimates of effects due to higher conformal spins in the pion twist-4 DAs are obtained.

13 pages, 7 figures; the version to appear in Phys.Rev. D

Cited by in corpus (20)

• Higher-Twist Distribution Amplitudes of the K Meson in QCD
• Light Cone Sum Rules for the pi0-gamma*-gamma Form Factor Revisited
• Light-cone distribution amplitudes of pseudoscalar mesons from lattice QCD
• Transition form factors of the pion in light-cone QCD sum rules with next-to-next-to-leading order contributions
• Distribution amplitudes of $\Sigma$ and $\Lambda$ and their electromagnetic form factors
• Light Cone Sum Rules for gamma* N -> Delta Transition Form Factors
• Impact of the higher twist effects on the $\gamma {\gamma }^{\ast }\to {\pi }^0$ transition form factor
• The pion light-cone distribution amplitude from the pion electromagnetic form factor
• Revisiting the Pion Leading-Twist Distribution Amplitude within the QCD Background Field Theory
• Pion electromagnetic form factor, perturbative QCD, and large-Nc Regge models
• Hard exclusive two photon processes in QCD
• Three-parton contribution to pion form factor in kT factorization
• New vistas of the meson structure in QCD from low to high energies
• NLO perturbative QCD predictions for gamma gamma -> M+ M- (M=pi,K)
• Probing isovector scalar mesons in the charmless three-body $B$ decays
• Dipion light-cone distribution amplitudes and $B\to \pi \pi$ form factors
• Pion distribution amplitude from holographic QCD and the electromagnetic form factor F_pi(Q2)
• The longitudinal and transverse distributions of the pion wavefunction from the present experimental data on the pion-photon transition form factor
• Constraint of $\xi$-moments calculated with QCD sum rules on the pion distribution amplitude models
• Electromagnetic form-factor of the $\pi$ meson with light-cone QCD sum rules