Comment on scalar glueball mass

We study the interaction of scalar glueball with quark-antiquark and four-quark spinless meson fields within the framework of a generalized linear sigma model in which the trace anomaly of QCD is exactly realized. To determine the pure scalar glueball mass (m(h)), we consider the decoupling limit in which the scalar glueball decouples from the meson fields. We find the exact relationship m(h) = 2 h(0) where h(0) is the vacuum expectation value of the scalar glueball field independent of the properties of the framework used. (C) 2019 The Authors. Published by Elsevier B.V.