Pseudoscalar glueball mass from $\eta$-${\eta }^{\prime }$-$G$ mixing

Hai-Yang Cheng, Hsiang-nan Li, Keh-Fei Liu

We deduce the mass of the pseudoscalar glueball $G$ from an $\eta$-${\eta }^{\prime }$-$G$ mixing formalism based on the anomalous Ward identity for transition matrix elements. With the inputs from…