arXiv:hep-ph/0703013·v1·High Energy Physics — Phenomenology
Two-Loop Formfactors in Theories with Mass Gap and Z-Boson Production
A. Kotikov🇷🇺 · J.H. Kuhn🇩🇪 · O. Veretin🇩🇪
Abstract
The two-loop formfactor both for a U(1)xU(1) and a SU(2)xU(1) gauge theory with massive and massless gauge bosons respectively is evaluated at arbitrary momentum transfer q^2. The asymptotic behaviour for q^2->\infinity is compared to a recent calculation of Sudakov logarithms. The result is an important ingredient for the calculation of radiative corrections to Z-boson production at hadron and lepton colliders.
Comments: 16 pp., 2 ff