  We compute the survival probability $<|S|^{2}>$ of large rapidity gaps (LRG)
in a QCD based eikonal model with a dynamical gluon mass, where this dynamical
infrared mass scale represents the onset of nonperturbative contributions to
the diffractive hadron-hadron scattering. Since rapidity gaps can occur in the
case of Higgs boson production via fusion of electroweak bosons, we focus on
$WW\to H$ fusion processes and show that the resulting $<|S|^{2}>$ decreases
with the increase of the energy of the incoming hadrons, in line with the
available experimental data for LRG. We obtain $<|S|^{2} > = 27.6\pm7.8$ % ($
18.2\pm7.0$ %) at Tevatron (CERN-LHC) energy for a dynamical gluon mass
$m_{g}=400$ MeV.

High Energy Physics - Phenomenology;High Energy Physics - Experiment