期刊
PHYSICAL REVIEW LETTERS
卷 115, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.115.062002
关键词
-
资金
- DOE [DE-AC02-06CH11357, DE-FG02-91ER40684]
- U.S. DOE
- Office of Science of the U.S. Department of Energy [DE-AC02-05CH11231]
We present the complete calculation of W-boson production in association with a jet in hadronic collisions through next-to-next-to-leading order (NNLO) in perturbative QCD. To cancel infrared divergences, we discuss a new subtraction method that exploits the fact that the N-jettiness event-shape variable fully captures the singularity structure of QCD amplitudes with final-state partons. This method holds for processes with an arbitrary number of jets and is easily implemented into existing frameworks for higher-order calculations. We present initial phenomenological results for W + jet production at the LHC. The NNLO corrections are small and lead to a significantly reduced theoretical error, opening the door to precision measurements in the W + jet channel at the LHC.
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