Parton Shower Effects on W and Z Production via Vector Boson Fusion at NLO QCD
arXiv:1302.2884 · doi:10.1007/JHEP04(2013)057
Abstract
We present the implementation of electroweak Zjj and Wjj production via vector boson fusion with fully leptonic decays at NLO QCD in the POWHEG framework. These processes represent an important background to Higgs searches in vector boson fusion, but they also can be seen as signal processes to study anomalous triple vector boson couplings as well as the impact of a central jet veto. Observables related to the third jet are sensitive to the parton shower which is used, a fact which is demonstrated by a comparison between PYTHIA, the standard angular-ordered HERWIG++ shower and the new p_T-ordered Dipole Shower in HERWIG++.
16 pages, 7 figures, 1 table. Reference added, typos fixed
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