- CERN-LHC. The production of single top quarks and top antiquarks via the -channel exchange of a
virtual boson are measured in proton--proton collisions at a centre-of-mass energy
of 13 TeV at the LHC. The full Run 2 dataset recorded with the ATLAS detector in the years 2015--2018 is used.
The total cross-sections are determined to be
and for top-quark and top-antiquark production,
respectively.
The combined cross-section is found to be and the
cross-section ratio is .
The measured cross-sections are in good agreement with predictions made at
next-to-next-to-leading order in quantum chromodynamics.
The predicted value of using different sets of parton
distribution functions is compared to the measured value, demonstrating the potential to further
constrain the functions when using this result in global fits.
The measurements of , , and are interpreted in an effective field
theory approach, setting limits at the 95\% confidence level on the strength of a four-quark operator
and an operator coupling the third quark generation to the Higgs boson doublet:
and
.
The measured total cross-section is further used to derive the constraint at the 95%
confidence level.
In a more general approach, pairs of CKM matrix elements involving top quarks are simultaneously
constrained, leading to confidence contours in the corresponding two-dimensional
parameter spaces.
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The 17 variables used for the training of the NN ordered by their discriminating power. The jet that is not...
Table 3
Table 3 on page 21 of the paper.
10.17182/hepdata.150693.v1/t2
The impact of different groups of systematic uncertainties on the , , ...
Table 4
Table 4 on page 22 of the paper.
10.17182/hepdata.150693.v1/t3
The impact of the eight most important systematic uncertainties on the , and \(\sigma(tq + \bar...
Table 5
Table 5 on page 23 of the paper.
10.17182/hepdata.150693.v1/t4
The impact of the eight most important systematic uncertainties on , in %.
Table 6
Table 6 on page 23 of the paper.
10.17182/hepdata.150693.v1/t5
The post-fit yields in the two SRs. All uncertainties applied in the analysis are included.
EFT limits and Vtb
Page 26 of the paper.
10.17182/hepdata.150693.v1/t6
Limits on EFT parameters and Vtb extracted from the analysis. The upper and lower limits correspond to 95% CL.
Results
Page 20 of the paper.
10.17182/hepdata.150693.v1/t7
Results of the main analysis.
SR plus prefit
Figure 6(a) on page 17
10.17182/hepdata.150693.v1/t8
Pre-fit distribution of the NN discriminant in SR plus.
SR plus postfit
Figure 7(a) on page 22
10.17182/hepdata.150693.v1/t9
Post-fit distribution of the NN discriminant in SR plus.
muon CR plus postfit
Figure 12(a) on page 31
10.17182/hepdata.150693.v1/t10
Post-fit distribution of the variable in the muon-plus CR.
SR minus prefit
Figure 6(b) on page 17
10.17182/hepdata.150693.v1/t11
Pre-fit distribution of the NN discriminant in SR minus.
SR minus postfit
Figure 7(b) on page 22
10.17182/hepdata.150693.v1/t12
Post-fit distribution of the NN discriminant in SR minus.
muon CR minus postfit
Figure 12(b) on page 31
10.17182/hepdata.150693.v1/t13
Post-fit distribution of the variable in the muon-minus CR.
prefit
Figure 4(a) on page 15
10.17182/hepdata.150693.v1/t14
Pre-fit distribution of the invariant mass of the untagged jet and the b-tagged jet, , in SR plus.
prefit
Figure 4(b) on page 15
10.17182/hepdata.150693.v1/t15
Pre-fit distribution of the absolute value of the pseudorapidity of the untagged jet, , in SR plus.
prefit
Figure 4(c) on page 15
10.17182/hepdata.150693.v1/t16
Pre-fit distribution of the absolute value of the difference in between the reconstructed W boson and the jet pair,...
prefit
Figure 4(d) on page 15
10.17182/hepdata.150693.v1/t17
Pre-fit distribution of the difference in azimuth angle between the reconstructed W boson and the jet pair, , in...
prefit
Figure 5(a) on page 16
10.17182/hepdata.150693.v1/t18
Pre-fit distribution of the invariant mass of the reconstructed top quark, , in SR plus.
prefit
Figure 5(b) on page 16
10.17182/hepdata.150693.v1/t19
Pre-fit distribution of the absolute value of the difference in pseudorapidity between the charged lepton and the untagged jet, \(|\Delta\eta(\ell...
prefit
Figure 5(c) on page 16
10.17182/hepdata.150693.v1/t20
Pre-fit distribution of the angular distance of the charged lepton and the untagged jet, , in SR plus.
prefit
Figure 5(d) on page 16
10.17182/hepdata.150693.v1/t21
Pre-fit distribution of the absolute value of the difference in pseudorapidity between the b-tagged jet and the charged lepton, \(|\Delta\eta(b,\ell...
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When using this data, please cite the original publication:
ATLAS
Collaboration
(2024).
Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample. JHEP 05 (2024) 305.
Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample. HEPData (collection).
https://doi.org/10.17182/hepdata.150693
or, if you prefer, a specific version of the
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ATLAS
Collaboration
(2024).
Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample (Version 1). HEPData (collection).
https://doi.org/10.17182/hepdata.150693.v1
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ATLAS
Collaboration
(2024).
“Table 2” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t1
ATLAS
Collaboration
(2024).
“Table 3” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t2
ATLAS
Collaboration
(2024).
“Table 4” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t3
ATLAS
Collaboration
(2024).
“Table 5” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t4
ATLAS
Collaboration
(2024).
“Table 6” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t5
ATLAS
Collaboration
(2024).
“EFT limits and Vtb” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t6
ATLAS
Collaboration
(2024).
“Results” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t7
ATLAS
Collaboration
(2024).
“SR plus prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t8
ATLAS
Collaboration
(2024).
“SR plus postfit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t9
ATLAS
Collaboration
(2024).
“muon CR plus postfit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t10
ATLAS
Collaboration
(2024).
“SR minus prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t11
ATLAS
Collaboration
(2024).
“SR minus postfit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t12
ATLAS
Collaboration
(2024).
“muon CR minus postfit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t13
ATLAS
Collaboration
(2024).
“ prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t14
ATLAS
Collaboration
(2024).
“ prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t15
ATLAS
Collaboration
(2024).
“ prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t16
ATLAS
Collaboration
(2024).
“ prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t17
ATLAS
Collaboration
(2024).
“ prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t18
ATLAS
Collaboration
(2024).
“ prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t19
ATLAS
Collaboration
(2024).
“ prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t20
ATLAS
Collaboration
(2024).
“ prefit” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (dataset).
https://doi.org/10.17182/hepdata.150693.v1/t21
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ATLAS
Collaboration
(2024).
“workspace.json” of “Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample” (Version 1). HEPData (other).
https://doi.org/10.17182/hepdata.150693.v1/r1
When using this data, please cite the original publication:
ATLAS
Collaboration
(2024).
Measurement of -channel production of single top quarks and antiquarks in collisions at 13 TeV using the full ATLAS Run 2 data sample. JHEP 05 (2024) 305.
or, if you prefer, a specific version of the
record:
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