WW production at high transverse momenta beyond NLO

Abstract

Pair production of W gauge bosons is an important process at the LHC entering many experimental analyses, both as background in new-physics searches or Higgs measurements and as signal in precision studies and tests of the Standard Model. Therefore, accurate predictions for this class of processes are of great interest in order to exploit the full potential of LHC measurements. We use the LoopSim method to combine NLO QCD results for WW and WW+jet, as well as the loop-squared gluon-fusion contribution, to obtain approximate NNLO predictions for WW production. The cross sections are calculated with VBFNLO and include leptonic decays of the W bosons as well as finite-width and off-shell effects. We find that the size of the additional corrections beyond NLO can be significant and well outside of the NLO error bands given by renormalization and factorization scale variation. Applying a jet veto, we observe further negative corrections at NNLO, which we relate to the presence of large Sudakov logarithms.

12 pages, 5 figures; v2: expanded discussion in a few places, improved table 1, added references, version accepted by Nucl. Phys. B

References in corpus (10)

• Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC
• Parton distributions for the LHC
• Vector boson pair production at the LHC
• A standard format for Les Houches Event Files
• VBFNLO: A parton level Monte Carlo for processes with electroweak bosons
• Measurement of W+W- and ZZ production cross sections in pp collisions at sqrt(s) = 8 TeV
• NLO QCD corrections to WW+jet production at hadron colliders
• Measurement of the WW cross section in sqrt(s) = 7 TeV pp collisions with the ATLAS detector and limits on anomalous gauge couplings
• Two-Loop Master Integrals for $q\bar{q}\to VV$: the Planar Topologies
• New Physics backgrounds to the H -> WW search at the LHC?

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• NNLO W Pair Production at the LHC: Status Report