Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2005-09-12
Phys.Rev. D72 (2005) 096008
Physics
High Energy Physics
High Energy Physics - Phenomenology
25 pages. v2: References added, figures 1-3 have enlarged arrows, special limits of equation (4.43) are now provided. A comput
Scientific paper
10.1103/PhysRevD.72.096008
I present the two-loop self-energy functions and pole masses for fermions in an arbitrary renormalizable field theory, in the approximation that vector bosons are treated as massless. The calculations are done simultaneously in the mass-independent \bar{MS}, \bar{DR}, and \bar{DR}' renormalization schemes, with a general covariant gauge fixing, and treating Majorana and Dirac fermions in a unified way. As examples, I discuss the two-loop strong interaction corrections to the gluino, neutralino, chargino, and quark pole masses in minimal supersymmetry. All other two-loop contributions to the fermion pole masses in softly broken supersymmetry can also be obtained as special cases of the results given here, neglecting only the electroweak symmetry breaking scale compared to larger mass scales in two-loop diagrams that involve W or Z bosons.
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