Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-08-03
Physics
High Energy Physics
High Energy Physics - Phenomenology
41 pages, 19 figures. Figures updated from v1.5 to 1.6 of external Rivet program, reference line in figs. 4,5,11 corrected. Ci
Scientific paper
In this article we generalise POWHEG next-to-leading order parton shower (NLOPS) simulations of vector boson production and vector boson production in association with a single jet, to give matrix element corrected MENLOPS simulations. In so doing we extend and provide, for the first time, an exact and faithful implementation of the MENLOPS formalism in hadronic collisions. We also consider merging the resulting event samples according to a phase space partition defined in terms of an effective jet clustering scale. The merging scale is restricted such that the component generated by the associated production simulation does not impact on the NLO accuracy of inclusive vector boson production observables. The dependence of the predictions on the unphysical merging scale is demonstrated. Comparisons with Tevatron and LHC data are presented.
Alioli Simone
Hamilton Keith
Re Emanuele
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