Form factor ${\pi }^0{\gamma }^{\ast }\gamma$ in lightcone sum rules combined with renormalization-group summation vs experimental data

C. Ayala, S. V. Mikhailov, A. V. Pimikov +1

We consider the lightcone sum-rule (LCSR) description of the pion-photon transition form factor in combination with the renormalization group of QCD. The emerging scheme represents…