Precise Predictions for W + 3 Jet Production at Hadron Colliders

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We report on the first next-to-leading order QCD computation of W + 3-jet production in hadronic collisions including all partonic subprocesses. We compare the results with CDF data from the Tevatron, and find excellent agreement. The renormalization and factorization scale dependence is reduced substantially compared to leading-order calculations. The required one-loop matrix elements are computed using on-shell methods, implemented in a numerical program, BlackHat. We use the SHERPA package to generate the real-emission contributions and to integrate the various contributions over phase space. We use a leading-color (large-N{sub c}) approximation for the virtual part, which we confirm in W + ... continued below

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5 pages

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Berger, C.F.; /MIT, LNS; Bern, Z.; /UCLA; Dixon, L.J.; /SLAC et al. February 23, 2009.

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Description

We report on the first next-to-leading order QCD computation of W + 3-jet production in hadronic collisions including all partonic subprocesses. We compare the results with CDF data from the Tevatron, and find excellent agreement. The renormalization and factorization scale dependence is reduced substantially compared to leading-order calculations. The required one-loop matrix elements are computed using on-shell methods, implemented in a numerical program, BlackHat. We use the SHERPA package to generate the real-emission contributions and to integrate the various contributions over phase space. We use a leading-color (large-N{sub c}) approximation for the virtual part, which we confirm in W + 1,2-jet production to be valid to within three percent. The present calculation demonstrates the utility of on-shell methods for computing next-to-leading-order corrections to processes important to physics analyses at the Large Hadron Collider.

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5 pages

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  • Journal Name: Physical Review Letters

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  • Report No.: SLAC-PUB-13539
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 948489
  • Archival Resource Key: ark:/67531/metadc896149

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  • February 23, 2009

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  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 6, 2016, 4:17 p.m.

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Berger, C.F.; /MIT, LNS; Bern, Z.; /UCLA; Dixon, L.J.; /SLAC et al. Precise Predictions for W + 3 Jet Production at Hadron Colliders, article, February 23, 2009; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc896149/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.