Two-photon form factors of the pi0, eta and eta-prime mesons in the chiral theory with resonances

Understand

We have developed a phenomenological approach which describes very well the pi0, eta and eta-prime meson production in the two-photon interactions.

• The simultaneous description of the pi0, eta and eta-prime meson two-photon form factors is consistent with data in the space-like region.
• The obtained form factors are implemented in the event generator EKHARA and the simulated cross sections are presented.
• Uncertainties in the measured form factors coming from the model dependence in Monte Carlo simulations are studied.