  We propose a one-parameter family of nonlinear covariant gauges which can be
formulated as an extremization procedure that may be amenable to lattice
implementation. At high energies, where the Gribov ambiguities can be ignored,
this reduces to the Curci-Ferrari-Delbourgo-Jarvis gauges. We further propose a
continuum formulation in terms of a local action which is free of Gribov
ambiguities and avoids the Neuberger zero problem of the standard Faddeev-Popov
construction. This involves an averaging over Gribov copies with a nonuniform
weight, which introduces a new gauge-fixing parameter. We show that the
proposed gauge-fixed action is perturbatively renormalizable in four dimensions
and we provide explicit expressions of the renormalization factors at one loop.
We discuss the possible implications of the present proposal for the
calculation of Yang-Mills correlators.
