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I present the two-loop self-energy functions for scalar bosons in a generalrenormalizable theory, within the approximation that vector bosons are treatedas massless or equivalently that gauge symmetries are unbroken. This enablesthe computation of the two-loop physical pole masses of scalar particles inthat approximation. The calculations are done simultaneously in themass-independent \bar{MS}, \bar{DR}, and \bar{DR}' renormalization schemes, andwith arbitrary covariant gauge fixing. As an example, I present the two-loopSUSYQCD corrections to squark masses, which can increase the known one-loopresults by of order one percent. More generally, it is now straightforward toimplement all two-loop sfermion pole mass computations in supersymmetry usingthe results given here, neglecting only the electroweak vector boson massescompared to the superpartner masses in the two-loop parts.Comment: 16 pages, 4 figures. v2: typo in eq. (5.30) fixe

Two-loop scalar self-energies and pole masses in a general renormalizable theory with massless gauge bosons