Assault on the NLO Wishlist: pp -> tt bb
arXiv:0907.4723 · doi:10.1088/1126-6708/2009/09/109
Abstract
We present the results of a next-to-leading order calculation of QCD corrections to the production of an on-shell top-anti-top quark pair in association with two flavored b-jets. Besides studying the total cross section and its scale dependence, we give several differential distributions. Where comparable, our results agree with a previous analysis. While the process under scrutiny is of major relevance for Higgs boson searches at the LHC, we use it to demonstrate the ability of our system built around Helac-Phegas to tackle complete calculations at the frontier of current studies for the LHC. On the technical side, we show how the virtual corrections are efficiently computed with Helac-1Loop, based on the OPP method and the reduction code CutTools, using reweighting and Monte Carlo over color configurations and polarizations. As far as the real corrections are concerned, we use the recently published Helac-Dipoles package. In connection with improvements of the latter, we give the last missing integrated dipole formulae necessary for a complete implementation of phase space restriction dependence in the massive dipole subtraction formalism.
19 pages, 11 figures, 2 tables. References added, version to appear in JHEP
References in corpus (27)
- NLO QCD corrections to t tbar + jet production at hadron colliders
- Automating dipole subtraction for QCD NLO calculations
- NLO QCD corrections to pp -> t anti-t b anti-b + X at the LHC
- Helac-Phegas: a generator for all parton level processes
- Tops from Light Quarks: Full Mass Dependence at Two-Loops in QCD
- Next-to-leading order QCD corrections to t-tbar-Z production at the LHC
- Polarizing the Dipoles
- Automation of the Dipole Subtraction Method in MadGraph/MadEvent
- NLO QCD corrections to tri-boson production
- QCD corrections to tri-boson production
- Heavy-quark production in massless quark scattering at two loops in QCD
- Inclusive Heavy Flavor Hadroproduction in NLO QCD: the Exact Analytic Result
- QCD corrections to hadronic WWZ production with leptonic decays
- Two-Loop Planar Corrections to Heavy-Quark Pair Production in the Quark-Antiquark Channel
- NLO QCD corrections to WW+jet production at hadron colliders
- QCD corrections to charged triple vector boson production with leptonic decay
- Next-to-leading order predictions for WW + 1 jet distributions at the LHC
- The one-loop gluon amplitude for heavy-quark production at NNLO
- The NLO multileg working group: summary report
- Heavy quark pair production in gluon fusion at next-to-next-to-leading order: One-loop squared contributions
- Associated Production of a W Boson and One b Jet
- On the Soft-Gluon Resummation in Top Quark Pair Production at Hadron Colliders
- TeVJet: A general framework for the calculation of jet observables in NLO QCD
- NLO QCD corrections to Z b anti-b production with massive bottom quarks at the Fermilab Tevatron
- Next-to-next-to-leading order results for heavy quark pair production in quark--antiquark collisions: The one-loop squared contributions
- Automating dipole subtraction
- NLO QCD corrections to pp->WW+jet+X