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The van Dam-Veltman-Zakharov (vDVZ) mass discontinuity problem can be solvedin the frame of the linear approximation of the Poincare-covariant second ranksymmetric tensor field gravitation theory. Conservation of the sourceenergy-momentum tensor, together with gauge invariance of the field equations,lead to generation of two intrinsic irreducible non-ghost dynamical fields:4-traceless symmetric tensor (spin-2 universal attraction) and 4-trace (spin-0universal repulsion). Due to difference in the signs of these forces the totalfree field Lagrangian contains different signs for the tensor and scalardynamical fields. Generalized Fierz-Pauli mass term in total spin-2 plus spin-0Lagrangian gives natural massless limit for mg --> 0, so the mass discontinuityparadox is absent. The Newtonian gravity and relativistic gravity effects,including positive localizable energy density of both parts of thegravitational field, are derived. Experimental test of the reality of thedynamical spin-0 repulsive field can be performed by LIGO-Virgo gravitationalwave observations.

A solution of the van Dam-Veltman-Zakharov discontinuity problem in the frame of the Poincare-covariant field gravitation theory