6533b82cfe1ef96bd128eb4c

RESEARCH PRODUCT

New representation of two-loop propagator and vertex functions

Czarnecki AndrzejDirk KreirnerUlrich Kilian

subject

PhysicsNuclear and High Energy PhysicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Multiple integralQuantum mechanicsScalar (mathematics)Mathematical analysisFOS: Physical sciencesPropagator

description

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.

yearjournalcountryeditionlanguage
1994-05-31
http://arxiv.org/abs/hep-ph/9405423