EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH CERN-PPE/95-109 14 July 1995 FOUR-FERMION PRODUCTION THROUGH RESONATING BOSON PAIRS AT LEP2

AMonte Carlo program for the simulation of four-fermion nal states at LEP2 is presented. It contains the Feynman diagrams with two resonating W's and Z's and features, among other things, initial and nal state radiation, Coulomb singularity e ects and e ective couplings. It is interfaced to the JETSET package to handle gluon radiation, hadronisation and decays. Its usefulness for experimental studies is stressed. Comparisons with some other calculations show that it is precise enough for most experimental uses. (Submitted to Zeitschrift f ur Physik C) Supported by the US Department of Energy, grant number DE-FG0295ER40896.