We present a scheme for integrating the matrix element of an arbitrary e^+e^-\to f_1f_2\bar f_3\bar f_4 process over the complete four-fermion phase space, or its any part, by means of the Monte Carlo technique. The presented algorithm has been successfully implemented in the KORALW Monte Carlo code.
Cite
@article{arxiv.hep-ph/9904385,
title = {How to Generate Four-Fermion Phase Space},
author = {M. Skrzypek and Z. Was},
journal= {arXiv preprint arXiv:hep-ph/9904385},
year = {2009}
}