ALPGEN, a generator for hard multiparton processes in hadronic collisions

Details ALPGEN, a generator for hard multiparton processes in hadronic collisions ALPGEN, a generator for hard multiparton processes in hadronic collisions

2002-06-28

arxiv.org/abs/hep-ph/0206293v2

JHEP 0307 (2003) 001

Physics

High Energy Physics

High Energy Physics - Phenomenology

1+38 pages, uses JHEP.cls. Documents code version 1.2: extended list of processes, updated documentation and bibliography

Scientific paper

10.1088/1126-6708/2003/07/001

This paper presents a new event generator, ALPGEN, dedicated to the study of multiparton hard processes in hadronic collisions. The code performs, at the leading order in QCD and EW interactions, the calculation of the exact matrix elements for a large set of parton-level processes of interest in the study of the Tevatron and LHC data. The current version of the code describes the following final states: (W -> ffbar') QQbar+ N jets (Q being a heavy quark, and f=l,q), with N<=4; (Z/gamma* -> f fbar)+QQbar+Njets (f=l,nu), with N<=4; (W -> ffbar') + charm + N jets (f=l,q), N<= 5; (W -> f fbar') + N jets (f=l,q) and (Z/gamma* -> f fbar)+ N jets (f=l,nu), with N<=6; nW+mZ+lH+N jets, with n+m+l+N<=8 and N<=3 including all 2-fermion decay modes of W and Z bosons, with spin correlations; Q Qbar+N jets (N<=6) with t -> b f fbar' decays and relative spin correlations included if Q=t; Q Qbar Q' Qbar'+N jets, with Q and Q' heavy quarks (possibly equal) and N<=4; H Q Qbar+N jets (N<=4) with t -> b f fbar' decays and relative spin correlations included if Q=t; N jets, with N<=6. Parton-level events are generated, providing full information on their colour and flavour structure, enabling the evolution of the partons into fully hadronised final states.

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