The ${\eta }^{\prime }{g}^{\ast }{g}^{\ast }$ vertex with arbitrary gluon virtualities in the perturbative QCD hard scattering approach

A. Ali, A. Ya. Parkhomenko

We study the ${\eta }^{\prime }{g}^{\ast }{g}^{\ast }$ vertex for arbitrary gluon virtualities in the time-like and space-like regions, using the perturbative QCD hard scattering approach and an input wa…