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Chinese Physics C> 2018, Vol. 42> Issue(3) : 033101 DOI: 10.1088/1674-1137/42/3/033101

Event patterns extracted from top quark-related spectra in proton-proton collisions at 8 TeV

  • 1.

      Institute of Theoretical Physics &

  • We analyze the transverse momentum (pT) and rapidity (y) spectra of top quark pairs, hadronic top quarks, and top quarks produced in proton-proton (m pp) collisions at center-of-mass energy √s=8 TeV. For pT spectra, we use the superposition of the inverse power-law suggested by the QCD (quantum chromodynamics) calculus and the Erlang distribution resulting from a multisource thermal model. For y spectra, we use the two-component Gaussian function resulting from the revised Landau hydrodynamic model. The modelling results are in agreement with the experimental data measured at the detector level, in the fiducial phase-space, and in the full phase-space by the ATLAS Collaboration at the Large Hadron Collider (LHC). Based on the parameter values extracted from pT and y spectra, the event patterns in three-dimensional velocity (βx-βy-βz), momentum (px-py-pz), and rapidity (y1-y2-y) spaces are obtained, and the probability distributions of these components are also obtained.
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Ya-Hui Chen, Fu-Hu Liu and Roy A. Event patterns extracted from top quark-related spectra in proton-proton collisions at 8 TeV[J]. Chinese Physics C, 2018, 42(3): 033101. doi: 10.1088/1674-1137/42/3/033101
Ya-Hui Chen, Fu-Hu Liu and Roy A. Event patterns extracted from top quark-related spectra in proton-proton collisions at 8 TeV[J]. Chinese Physics C, 2018, 42(3): 033101.  doi: 10.1088/1674-1137/42/3/033101 shu
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Received: 2017-10-12
Revised: 2017-12-24
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    Supported by National Natural Science Foundation of China (11575103, 11747319), the Shanxi Provincial Natural Science Foundation (201701D121005), the Fund for Shanxi 1331 Project Key Subjects Construction and the US DOE (DE-FG02-87ER40331.A008)

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Event patterns extracted from top quark-related spectra in proton-proton collisions at 8 TeV

    Corresponding author: Fu-Hu Liu,
  • 1.  Institute of Theoretical Physics &
  • Received Date: 2017-10-12
  • Accepted Date: 2017-12-24
  • Available Online: 2018-03-05
Fund Project:  Supported by National Natural Science Foundation of China (11575103, 11747319), the Shanxi Provincial Natural Science Foundation (201701D121005), the Fund for Shanxi 1331 Project Key Subjects Construction and the US DOE (DE-FG02-87ER40331.A008)

Abstract: We analyze the transverse momentum (pT) and rapidity (y) spectra of top quark pairs, hadronic top quarks, and top quarks produced in proton-proton (m pp) collisions at center-of-mass energy √s=8 TeV. For pT spectra, we use the superposition of the inverse power-law suggested by the QCD (quantum chromodynamics) calculus and the Erlang distribution resulting from a multisource thermal model. For y spectra, we use the two-component Gaussian function resulting from the revised Landau hydrodynamic model. The modelling results are in agreement with the experimental data measured at the detector level, in the fiducial phase-space, and in the full phase-space by the ATLAS Collaboration at the Large Hadron Collider (LHC). Based on the parameter values extracted from pT and y spectra, the event patterns in three-dimensional velocity (βx-βy-βz), momentum (px-py-pz), and rapidity (y1-y2-y) spaces are obtained, and the probability distributions of these components are also obtained.

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