Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1994-05-31
Nucl.Phys. B433 (1995) 259-275
Physics
High Energy Physics
High Energy Physics - Phenomenology
13 pages (9 figures not included; complete ps file available from the authors), LaTeX, MZ-TH/94-13
Scientific paper
We present a new method of calculating scalar propagator and vertex functions
in the two-loop approximation, for arbitrary masses of particles. It is based
on a double integral representation, suitable for numerical evaluation. Real
and imaginary parts of the diagrams are calculated separately, so that there is
no need to use complex arithmetics in the numerical program.
Czarnecki Andrzej
Kilian Ulrich
Kreimer Dirk
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