Complete Initial State Radiation to off-Shell $Z^0$~PAIR Production in $e^{+}{e}^{-}$~ANNIHILATION

Abstract

A cross-section calculation for the Standard Model reaction $e^{+}{e}^{-}\to (Z^0{Z}^0)\to f_1\overline{f_1}{f}_2\overline{f_2}$ including the effects of the finite $Z^0$~width and initial state radiative corrections is presented. The angular phase space integrations are performed analytically, leaving the invariant masses for numerical integration. Semi-analytical and numerical results in the energy range $\sqrt{s}=150GeV$ to $1TeV$ are reported.

To appear in the Proceedings of the IX International Workshop ``High Energy Physics and Quantum Field Theory", Zvenigorod, Moscow Region, Russia, September $15^{th}-22^{nd}1994$. 7 pages (LaTeX) with 2 figures (not included). A uuencoded file containing the LaTeX source code, picture postscript files and a full postscript version is available via anonymous ftp at ftp://ftp.ifh.de/pub/preprint/desy94-216.uu