Vector Boson + Jets with BLACKHAT and SHERPA
Abstract
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 distribution of the fourth jet, for a single subprocess with the maximum number of gluons.
- Publication:
-
Nuclear Physics B Proceedings Supplements
- Pub Date:
- August 2010
- DOI:
- 10.1016/j.nuclphysbps.2010.08.025
- arXiv:
- arXiv:1005.3728
- Bibcode:
- 2010NuPhS.205...92B
- Keywords:
-
- High Energy Physics - Phenomenology;
- High Energy Physics - Experiment
- E-Print:
- 6 pages, 4 figures, presented at Loops and Legs 2010