On the possibility to detect the Higgs decay H→bb¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$H\rightarrow b\bar{b}$$\end{document} in the associated Z+bb¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$Z+ b\bar{b}$$\end{document} production at the LHC

被引:0
作者
A. V. Lipatov
N. P. Zotov
机构
[1] Lomonosov Moscow State University,Skobeltsyn Institute of Nuclear Physics
[2] Joint Institute for Nuclear Research,undefined
来源
The European Physical Journal C | 2015年 / 75卷 / 5期
关键词
Higgs Boson; Transverse Momentum; Boson Production; Higgs Signal; Transverse Momentum Dependent;
D O I
10.1140/epjc/s10052-015-3419-4
中图分类号
学科分类号
摘要
We investigate the possibility to detect the scalar Higgs boson decay H→bb¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$H\rightarrow b\bar{b}$$\end{document} in the associated Z\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$Z$$\end{document} and bb¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$b\bar{b}$$\end{document} production at the LHC using the kT\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$k_T$$\end{document}-factorization QCD approach. Our consideration is based on the off-shell (i.e. depending on the transverse momenta of initial quarks and gluons) production amplitudes of q∗q¯∗→ZH→Zq′q¯′\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$q^* \bar{q}^* \rightarrow Z H \rightarrow Z q^\prime \bar{q}^\prime $$\end{document}, q∗q¯∗→Zq′q¯′\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$q^* \bar{q}^* \rightarrow Z q^\prime \bar{q}^\prime $$\end{document}, and g∗g∗→Zq′q¯′\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$g^* g^* \rightarrow Z q^\prime \bar{q}^\prime $$\end{document} partonic subprocesses supplemented with the Catani–Ciafoloni–Fiorani–Marchesini (CCFM) dynamics of parton densities in a proton. We argue that the H→bb¯\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$H \rightarrow b\bar{b}$$\end{document} signal could be observed at large transverse momenta near the Higgs boson peak despite the overwhelming QCD background, and we point out the important role of angular correlations between the produced Z\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$Z$$\end{document} boson and b\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$b$$\end{document}-quarks.
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  • [1] Spira M(1995)undefined Nucl. Phys. B 453 17-undefined
  • [2] Djouadi A(1991)undefined Phys. Lett. B 264 440-undefined
  • [3] Graudenz D(1991)undefined Nucl. Phys. B 359 283-undefined
  • [4] Zerwas P(2002)undefined Phys. Rev. Lett. 88 201801-undefined
  • [5] Djouadi A(2002)undefined Nucl. Phys. B 646 220-undefined
  • [6] Spira M(2003)undefined Nucl. Phys. B 665 325-undefined
  • [7] Zerwas PM(2003)undefined JHEP 0307 028-undefined
  • [8] Dawson S(2011)undefined JHEP 1111 064-undefined
  • [9] Harlander RV(1983)undefined Phys. Rep. 100 1-undefined
  • [10] Kilgore WB(1991)undefined Sov. J. Nucl. Phys. 53 657-undefined