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AbstractAbstract
[en] We review recent NLO QCD results for W, Z + 3-jet production at hadron colliders, computing using BlackHat and SHERPA, and including also some new results for Z + 3-jet production for 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 pT distribution of the fourth jet, for a single subprocess with the maximum number of gluons.
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25 Aug 2010; 6 p; 10. DESY Workshop on Elementary Particle Theory: Loops and Legs in Quantum Field Theory 2010; Woerlitz (Germany); 25-30 Apr 2010; AC02-76SF00515; Available from http://www.slac.stanford.edu/cgi-wrap/getdoc/slac-pub-14105.pdf and http://www.slac.stanford.edu/cgi-wrap/pubpage?slac-pub-14105.html; PURL: https://www.osti.gov/servlets/purl/992428-H4VQ35/
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