A fully massive Monte Carlo generator for four fermion physics at e + e − colliders
نویسندگان
چکیده
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 ee 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 αQED, CKM mixing, resonances in qq̄ channels. 1 Work supported by the European Union under contract HPRN-CT-2000-00149, by Ministero dell’ Università e della Ricerca Scientifica and by the Swiss Bundesamt für Bildung und Wissenschaft. e-mail: [email protected],[email protected],[email protected]
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