Initial State Radiation to Off-shell ${\mathbb{Z}}^0$ Pair Production in $e^{+}{e}^{-}$ Annihilation

Abstract

A study of the Standard Model reaction ${\text{e}}^{+}{e}^{-}\to ({\mathbb{Z}}^0{\mathbb{Z}}^0)\to f_1\overline{f_1}{f}_2\overline{f_2}$ including the effects of the finite ${\mathbb{Z}}^0$~width and initial state radiative corrections is presented. All angular phase space integrations are performed analytically. The remaining invariant masses are integrated numerically. Semi-analytical and numerical results in the energy range $\text{RS}=200GeV$ to $1TeV$ are reported.

Comments: 6 pages (LaTeX), 2 figures (not included, a uuencoded file containing the LaTeX and all postscript files is available via anonymous ftp from convex.ifh.de as /pub/preprint/desy94-105.uu), DESY 94-105