Speaker
Bilgai Almeida Zamora
(Universidad Pablo de Olavide)
Description
We study pseudoscalar meson properties and compute the $\gamma^{*}\gamma \rightarrow \pi^0,\eta,\eta'$ transition form factor in the framework of the Dyson-Schwinger equations (DSE) and Bethe-Salpeter equations (BSE), using a momentum-independent contact interaction. The contact interaction is capable to describe the observable properties, but produce a transition form factor whose evolution for large $Q^2$ disagrees with experiment, as well as its asymptotic power-law behavior conflicts with pQCD. Moreover, we explore the influence of the pseudovector components of the Bethe-Salpeter amplitude, $F_{PS}(P)$, on the static properties and transition form factor.
Author
Bilgai Almeida Zamora
(Universidad Pablo de Olavide)
