Towards a Complete Calculation of $\gamma \gamma \to 4f$

Abstract

We present a general classification of all four fermion final states in $\gamma \gamma$~collisions and a calculation of cross sections below the $W^{+}{W}^{-}$-threshold.

Comments: 3 pages, LaTeX, contribution to the proceedings of "The International Europhysics Conference on High-Energy Physics", 19-26 August 1997, Jerusalem, Israel