Next-to-leading order QCD predictions for $Z^0{H}^0+\mathrm{jet}$ production at LHC

Abstract

We calculate the complete next-to-leading order (NLO) QCD corrections to the $Z^0{H}^0$ production in association with a jet at the LHC. We study the impacts of the NLO QCD radiative corrections to the integrated and differential cross sections and the dependence of the cross section on the factorization/renormalization scale. We present the transverse momentum distributions of the final $Z^0$-, Higgs-boson and leading-jet. We find that the NLO QCD corrections significantly modify the physical observables, and obviously reduce the scale uncertainty of the LO cross section. The QCD K-factors can be 1.183 and 1.180 at the $\sqrt{s}=14TeV$ and $\sqrt{s}=7TeV$ LHC respectively, when we adopt the inclusive event selection scheme with $p_{T,j}^{cut}=50GeV$, $m_H=120GeV$ and $\mu ={\mu }_r={\mu }_f={\mu }_0\equiv 1/2(m_Z+m_H)$. Furthermore, we make the comparison between the two scale choices, $\mu ={\mu }_0$ and $\mu ={\mu }_1=1/2(E_T^Z+E_T^H+{\sum }_j{E}_T^{jet})$, and find the scale choice $\mu ={\mu }_1$ seems to be more appropriate than the fixed scale $\mu ={\mu }_0$.

18 pages, 7 figures

References in corpus (8)

• Jet substructure as a new Higgs search channel at the LHC
• Jet substructure as a new Higgs search channel at the LHC
• Next-to-Leading Order QCD Predictions for W+3-Jet Distributions at Hadron Colliders
• NLO QCD corrections to WW+jet production at hadron colliders
• A combined search for the standard model Higgs boson at sqrt{s}=1.96 TeV
• Precision Calculations for Associated WH and ZH Production at Hadron Colliders
• Standard Model Higgs Searches
• Standard Model Higgs Searches and Perspectives at the Tevatron

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• Review of single vector boson production in pp collisions at $\sqrt{s}=7$ TeV
• High multiplicity processes at NLO with BlackHat and Sherpa