${\eta }^{\prime }-g^{\ast }-g$ Transition Form Factor with Gluon Content Contribution Tested

Abstract

We study the ${\eta }^{\prime }-g^{\ast }-g$ transition form factor by using the ${\eta }^{\prime }$ wave function constrained by the experimental data on the ${\eta }^{\prime }-{\gamma }^{\ast }-\gamma$ transition form factor provided by CLEO and L3 . We also take into account the contribution of the possible gluonic content of the ${\eta }^{\prime }$ meson.

Comments: RevTex 10 pages, 4 figures, the version accepted for publication in Phys. Rev. D