Speaker
Александр Хмелев
Description
The properties of light and heavy quark-antiquark bound states are investigated within a model featuring a nonlocal interaction. The framework is based on the Bethe-Salpeter equation with Gaussian-type vertex function that defines the nonlocal interaction kernel. The model parameters are constrained by experimental data on electromagnetic and leptonic decay constants. This model is used to calculate the neutral pion transition form factor $F_{\pi\gamma}$, as well as the transition form factors of heavy pseudoscalar mesons $η_c$ and $η_b$. Finally, radiative decays of the $\rho$-meson and heavy quarkonia are successfully described.
Author
Александр Хмелев
