Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-05-20
Nucl.Phys.Proc.Suppl.205-206:92-97,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
6 pages, 4 figures, presented at Loops and Legs 2010
Scientific paper
10.1016/j.nuclphysbps.2010.08.02
We review recent NLO QCD results for W,Z + 3-jet production at hadron colliders, computed using BlackHat and SHERPA. We also include some new results for Z + 3-jet production at the LHC at 7 TeV. We report new progress towards the NLO cross section for W + 4-jet production. In particular, we show that the virtual matrix elements produced by BlackHat are numerically stable. We also show that with an improved integrator and tree-level matrix elements from BlackHat, SHERPA produces well-behaved real-emission contributions. As an illustration, we present the real-emission contributions -- including dipole-subtraction terms -- to the p_T distribution of the fourth jet, for a single subprocess with the maximum number of gluons.
Berger Carola F.
Bern Zvi
Cordero Fernando Febres
Dixon Lance J.
Forde Darren
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