6533b834fe1ef96bd129d7b5
RESEARCH PRODUCT
W+W− production at high transverse momenta beyond NLO
F. CampanarioMichael RauchSebastian Sapetasubject
Quantum chromodynamicsPhysicsParticle physicsGauge bosonNuclear and High Energy PhysicsLarge Hadron ColliderPhysicsPhysics beyond the Standard ModelHigh Energy Physics::PhenomenologyFOS: Physical sciencesStandard ModelNuclear physicsHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Pair productionHiggs bosonddc:530High Energy Physics::ExperimentBosondescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2014-02-01 | Nuclear Physics B |