Fiducial, total and differential cross-section measurements of $t$-channel single top-quark production in $pp$ collisions at 8 TeV using data collected by the ATLAS detector

  • CERN-LHC. Detailed measurements of $t$-channel single top-quark production are presented. They use $20.2~\mathrm{fb}^{-1}$ of data collected by the ATLAS experiment in proton--proton collisions at a centre-of-mass energy of 8 TeV at the LHC. Total, fiducial and differential cross-sections are measured for both top-quark and top-antiquark production. The fiducial cross-section is measured with a precision of $5.8~\%$ (top quark) and $7.8~\%$ (top antiquark), respectively. The total cross-sections are measured to be $\sigma_\mathrm{tot}(tq) = 56.7^{+4.3}{-3.8}\;\mathrm{pb}$ for top-quark production and $\sigma\mathrm{tot}(\bar{t} q) = 32.9^{+3.0}_{-2.7}\;\mathrm{pb}$ for top-antiquark production, in agreement with the Standard Model prediction. In addition, the ratio of top-quark to top-antiquark production cross-sections is determined to be $R_t=1.72 \pm 0.09$. The differential cross-sections as a function of the transverse momentum and rapidity of both the top quark and the top antiquark are measured at both the parton and particle levels. The transverse momentum and rapidity differential cross-sections of the accompanying jet from the $t$-channel scattering are measured at particle level. All measurements are compared to various Monte Carlo predictions as well as to fixed-order QCD calculations where available.

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Imported on November 17, 2025
Last update November 17, 2025
Keywords
  • cmenergies: 8000.0-8000.0
  • observables: DSIG/DYRAP
  • observables: SLOPE
  • observables: RATIO
  • observables: ACC
  • observables: DSIG/DPT
  • observables: N
  • observables: CORR
  • observables: DESCRIPTION
  • observables: SIG
  • fiducial cross section
  • differential cross section
  • tq production
  • Total cross section
  • t-channel production
  • P P --> TOP X
  • P P --> TOPBAR X
Defined In https://doi.org/10.1140/epjc/s10052-017-5061-9
Author Morad Aaboud
More Authors
Georges Aad
Brad Abbott
Jalal Abdallah
Ovsat Abdinov
Baptiste Abeloos
Ossama AbouZeid
Nicola Abraham
Halina Abramowicz
Henso Abreu
Repository Name INSPIRE-HEP
Source Creation February 17, 2025
Source Modified March 26, 2025
Language Deutsch
Publication Year 2020-11-09