Abstract
This chapter presents an overview of the production of gauge bosons as well as the jets in hadronic collisions. Multijet final states are the characteristic of a large class of important phenomena present in high-energy hadronic collisions. QCD interactions generate multijet final states via radiative processes at high orders of perturbation theory (pure QCD processes). Heavy particles in the standard model, such as W and Z bosons or the top quark t , decay to multiquark configurations (eventually leading to jets) via electroweak (EW) interactions (mixed EW–QCD processes). In addition to fully hadronic multijet final states, a special interest exists in final states where the jets are accompanied by gauge bosons. There are two main sources of problems: the matrix-element evaluation and the reconstruction of the color flow. Each dual amplitude A({Pi}) corresponds to color flows from one gluon to the next, according to the ordering specified by the permutation of indices. ALPGEN is a collection of codes for the generation of multi-parton processes in hadronic collisions implementing the computational strategy within the framework of the presented approach. It can be used to perform the realistic studies of multiparticle processes at TEVATR0N and LHC.
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