Next-to-leading order QCD predictions for Z0H0 + jet production at LHC
Next-to-leading order QCD predictions for Z0H0 + jet production at LHC
复制标题
LHC Z0H0 喷气机生产的次领先订单 QCD 预测
DOI：
10.1007/jhep03(2012)059
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发表时间：
2012
影响因子：
5.4
通讯作者：
Han Liang
中科院分区：
文献类型：
--
作者：
Ji;Guo Lei;Wen;Ren;Liu;Han Liang
We calculate the complete next-to-leading order (NLO) QCD corrections to the Z0H0 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 Z0-, 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 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \sqrt {s} = {14} $\end{document}TeV and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \sqrt {s} = {7} $\end{document}TeV LHC respectively, when we adopt the inclusive event selection scheme with \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ p_{T,j}^{cut} = {5}0 $\end{document}GeV, mH = 120 GeV and μ = μr = μf = μ0 ≡ \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \frac{1}{2}\left( {{m_Z} + {m_H}} \right) $\end{document}. Furthermore, we make the comparison between the two scale choices, μ = μ0 and μ = μ1 = \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \frac{1}{2}\left( {E_T^Z + E_T^H + \sum\nolimits_j {E_T^{jet}} } \right) $\end{document}, and find the scale choice μ = μ1 seems to be more appropriate than the fixed scale μ = μ0.
We calculate the complete next-to-leading order (NLO) QCD corrections to the Z0H0 production in association with a jet at the LHC. We study the impacts of the NLO QCD radiative corrections to the integrated and differential cross sections and the dependence of the cross section on the factorization/renormalization scale. We present the transverse momentum distributions of the final Z0-, Higgs-boson and leading-jet. We find that the NLO QCD corrections significantly modify the physical observables, and obviously reduce the scale uncertainty of the LO cross section. The QCD K-factors can be 1.183 and 1.180 at the \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \sqrt {s} = {14} $\end{document}TeV and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \sqrt {s} = {7} $\end{document}TeV LHC respectively, when we adopt the inclusive event selection scheme with \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ p_{T,j}^{cut} = {5}0 $\end{document}GeV, mH = 120 GeV and μ = μr = μf = μ0 ≡ \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \frac{1}{2}\left( {{m_Z} + {m_H}} \right) $\end{document}. Furthermore, we make the comparison between the two scale choices, μ = μ0 and μ = μ1 = \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$ \frac{1}{2}\left( {E_T^Z + E_T^H + \sum\nolimits_j {E_T^{jet}} } \right) $\end{document}, and find the scale choice μ = μ1 seems to be more appropriate than the fixed scale μ = μ0.