Abstract::
In this study, we prove that it is necessary to introduce the non-zero gluon masses into
the fundamental Lagrangian of Quantum Chromodynamics in order to describe the mass gap in
the reaction of electron-positron annihilation into hadrons. Further, in this work, a new restriction
on the gluon masses is imposed, and the renormalized theory with non-zero Lagrangian gluon
masses is presented