  We present an error reduction method for obtaining glueball correlators from
monte carlo simulations of SU(3) lattice gauge theory. We explore the scalar
and tensor channels at three different lattice spacings. Using this method we
can follow glueball correlators to temporal separations even up to 1 fermi. We
estimate the improvement over the naive method and compare our results with
existing computations.

High Energy Physics - Lattice