arXiv:hep-ph/0506309·v1·High Energy Physics — Phenomenology
Off-shell scattering amplitudes in the double-logarithmic approximation
B.I. Ermolaev🇷🇺 · M. Greco🇮🇹 · F. Olness🇺🇸 · S.I. Troyan🇷🇺
Abstract
When scattering amplitudes are calculated in the double-logarithmic approximation, it is possible to relate the double-logarithmic on-shell and off-shell amplitudes. Explicit relations are obtained for scattering amplitudes in QED, QCD, and the ElectroWeak Standard Model. The off-shell amplitudes are considered in the hard and the Regge kinematic limits. We compare our results in both the Feynman and Coulomb gauges.
Comments: 15 pages, 3 figures; RevTeX4