WPHACT 2.0: A fully massive Monte Carlo generator for four fermion physics at e^+ e^- colliders

Details WPHACT 2.0: A fully massive Monte Carlo generator for four fermion physics at e^+ e^- colliders WPHACT 2.0: A fully massive Monte Carlo generator for four fermion physics at e^+ e^- colliders

2002-04-04

arxiv.org/abs/hep-ph/0204052v3

Comput.Phys.Commun. 150 (2003) 166-196

Physics

High Energy Physics

High Energy Physics - Phenomenology

38 pages, 5 figure: Version to be published in Comp.Phys.Comm

Scientific paper

10.1016/S0010-4655(02)00685-9

WPHACT 2.0 is the new fully massive version of a MC program and unweighted event generator which computes all Standard Model processes with four fermions in the final state at e^+ e^- colliders. The program can now generate unweighted events for any subset of all four fermion final states in a single run, by making use of dedicated pre-samples which can cover the entire phase space. Improvements with respect to WPHACT 1.0 include the Imaginary Fermion Loop gauge restoring scheme, new phase space mappings, a new input system, the possibility to compute subsets of Feynman diagrams and options for including ISR via QEDPS, running alpha_{QED}, CKM mixing, resonances in q bar(q) channels.

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