  We study the Landau gauge propagators of the lattice SU(2) 3d adjoint Higgs
model, considered as an effective theory of high temperature 4d SU(2) gauge
theory. From the long distance behaviour of the propagators we extract the
screening masses. The propagators are studied both in the symmetric and the
broken phases of the 3d Higgs model. It is shown that the pole masses extracted
from the propagators in the symmetric phase agree well with the screening
masses obtained recently in finite temperature SU(2) theory, while propagators
measured in the broken phase show quite a different behaviour. This suggest
that the symmetric phase of the 3d model corresponds to the deconfined phase of
the 4d SU(2) gauge theory. The relation of the propagator masses to the masses
extracted from gauge invariant correlators and the mass gap of pure 3d SU(2)
gauge theory is also discussed.
