Merging meets matching in MC@NLO

Sep, 2012
40 pages
Published in:
  • JHEP 12 (2012) 061
e-Print:
Report number:
  • CERN-PH-TH-2012-247,
  • ZU-TH-21-12
Experiments:

Citations per year

20122015201820212024050100150
Abstract: (arXiv)
The next-to-leading order accuracy for MC@NLO results exclusive in J light jets is achieved if the computation is based on matrix elements that feature J and J+1 QCD partons. The simultaneous prediction of observables which are exclusive in different light-jet multiplicities cannot simply be obtained by summing the above results over the relevant range in J; rather, a suitable merging procedure must be defined. We address the problem of such a merging, and propose a solution that can be easily incorporated into existing MC@NLO implementations. We use the automated aMC@NLO framework to illustrate how the method works in practice, by considering the production at the 8 TeV LHC of a Standard Model Higgs in association with up to J=2 jets, and of an e\nu_e pair or a t\bar{t} pair in association with up to J=1 jet.
Note:
  • 40 pages, 14 figures
  • NLO
  • Monte Carlo
  • higher-order: 1
  • top: pair production
  • quantum chromodynamics: perturbation theory
  • jet: multiplicity
  • p p: exclusive reaction
  • Higgs particle: hadroproduction
  • neutrino/e: hadroproduction
  • positron: hadroproduction