We study the SU(3) gluon propagator in renormalizable Rξ​ gauges
implemented on a symmetric lattice with a total volume of (3.25 fm)4 for
values of the guage fixing parameter up to ξ=0.5. As expected, the
longitudinal gluon dressing function stays constant at its tree-level value
ξ. Similar to the Landau gauge, the transverse Rξ​ gauge gluon
propagator saturates at a non-vanishing value in the deep infrared for all
values of ξ studied. We compare with very recent continuum studies and
perform a simple analysis of the found saturation with a dynamically generated
effective gluon mass.Comment: 6 pages, 4 figure