{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.133620.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2153660"}},{"@id":"https://doi.org/10.1007/JHEP06(2023)191","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2023","description":"A measurement of single top-quark production in the s-channel is performed in proton--proton collisions at a centre-of-mass energy of $13$ TeV with the ATLAS detector at the CERN Large Hadron Collider. The dataset corresponds to an integrated luminosity of 139 fb$^{-1}$. The analysis is performed on events with an electron or muon, missing transverse momentum and exactly two $b$-tagged jets in the final state. A discriminant based on matrix element calculations is used to separate single top-quark s-channel events from the main background contributions, which are top-quark pair production and $W$-boson production in association with jets. The observed (expected) signal significance over the background-only hypothesis is 3.3 (3.9) standard deviations, and the measured cross-section is $\\sigma=8.2^{+3.5}_{-2.9}$ pb, consistent with the Standard Model prediction of $\\sigma^{\\mathrm{SM}}=10.32^{+0.40}_{-0.36}$ pb.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t1","@type":"Dataset","description":"Result of the s-channel single-top cross-section measurement, in pb. The statistical and systematic uncertainties are given, as well as the...","name":"Cross-section measurement"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t2","@type":"Dataset","description":"Distribution of ${E}_{T}^{miss}$ after the fit of the multijet backgrounds, in the electron channel, in the signal region, without applying...","name":"Figure 2a"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t3","@type":"Dataset","description":"Distribution of ${E}_{T}^{miss}$ after the fit of the multijet backgrounds, in the electron channel, in the $W$+jets VR, without applying...","name":"Figure 2b"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t4","@type":"Dataset","description":"Distribution of ${E}_{T}^{miss}$ after the fit of the multijet backgrounds, in the electron channel, in the $t\\bar{t}$ 3-jets VR, without...","name":"Figure 2c"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t5","@type":"Dataset","description":"Distribution of ${E}_{T}^{miss}$ after the fit of the multijet backgrounds, in the electron channel, in the $t\\bar{t}$ 4-jets VR, without...","name":"Figure 2d"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t6","@type":"Dataset","description":"Distribution of $m_{T}^{W}$ after the fit of the multijet backgrounds, in the muon channel, in the signal region, without applying...","name":"Figure 3a"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t7","@type":"Dataset","description":"Distribution of $m_{T}^{W}$ after the fit of the multijet backgrounds, in the muon channel, in the $W$+jets VR, without applying...","name":"Figure 3b"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t8","@type":"Dataset","description":"Distribution of $m_{T}^{W}$ after the fit of the multijet backgrounds, in the muon channel, in the $t\\bar{t}$ 3-jets VR, without...","name":"Figure 3c"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t9","@type":"Dataset","description":"Distribution of $m_{T}^{W}$ after the fit of the multijet backgrounds, in the muon channel, in the $t\\bar{t}$ 4-jets VR, without...","name":"Figure 3d"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t10","@type":"Dataset","description":"Expected distributions of the MEM discriminant $P(S|X)$ in the SR, for the s-channel single-top signal, and for the $t\\bar{t}$ and...","name":"Figure 4"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t11","@type":"Dataset","description":"Distribution of the MEM discriminant $P(S|X)$ in the $W$+jets VR. Simulated events are normalised to the expected number of events...","name":"Figure 5a"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t12","@type":"Dataset","description":"Distribution of the MEM discriminant $P(S|X)$ in the $t\\bar{t}$ 3-jets VR. Simulated events are normalised to the expected number of...","name":"Figure 5b"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t13","@type":"Dataset","description":"Distribution of the MEM discriminant $P(S|X)$ in the $t\\bar{t}$ 4-jets VR. Simulated events are normalised to the expected number of...","name":"Figure 5c"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t14","@type":"Dataset","description":"Distribution of the MEM discriminant $P(S|X)$ in the SR before the fit to data, for MEM discriminant values larger than...","name":"Figure 6a"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t15","@type":"Dataset","description":"Distribution of the MEM discriminant $P(S|X)$ in the SR after the fit to data, for MEM discriminant values larger than...","name":"Figure 6b"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t16","@type":"Dataset","description":"Distribution of the MEM discriminant $P(S|X)$ in the SR after the fit to data, for MEM discriminant values larger than...","name":"Figure 7"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t17","@type":"Dataset","description":"Pre-fit and post-fit event yields in the SR, for MEM discriminant values larger than $2.0\\times10^{-4}$. The central value of the...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t18","@type":"Dataset","description":"Observed impact of the different sources of uncertainty on the measured s-channel signal cross-section, grouped by categories. The impact of...","name":"Table 2, summary"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t19","@type":"Dataset","description":"Observed impact of the different sources of $t\\bar{t}$ modelling uncertainty on the measured s-channel signal cross-section. The impact of each...","name":"Table 2, $t\\bar{t}$ modelling"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t20","@type":"Dataset","description":"Observed impact of the different sources of s-channel modelling uncertainty on the measured s-channel signal cross-section. The impact of each...","name":"Table 2, s-channel modelling"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t21","@type":"Dataset","description":"Observed impact of the different sources of t-channel modelling uncertainty on the measured s-channel signal cross-section. The impact of each...","name":"Table 2, t-channel modelling"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t22","@type":"Dataset","description":"Observed impact of the different sources of $tW$ modelling uncertainty on the measured s-channel signal cross-section, grouped by categories. The...","name":"Table 2, $tW$ modelling"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t23","@type":"Dataset","description":"Observed impact of the different sources of PDF uncertainties on the measured s-channel signal cross-section, grouped by categories. The impact...","name":"Table 2, PDFs"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t24","@type":"Dataset","description":"Comparison between data and prediction after the fit to data in the signal region for the leading-jet $p_{T}$. The last...","name":"Figure 1a aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t25","@type":"Dataset","description":"Comparison between data and prediction after the fit to data in the signal region for the leading-jet $\\eta$. The uncertainty...","name":"Figure 1b aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t26","@type":"Dataset","description":"Comparison between data and prediction after the fit to data in the signal region for the subleading-jet $p_{T}$. The last...","name":"Figure 1c aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t27","@type":"Dataset","description":"Comparison between data and prediction after the fit to data in the signal region for the subleading-jet $\\eta$. The uncertainty...","name":"Figure 1d aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t28","@type":"Dataset","description":"Comparison between data and prediction after the fit to data in the signal region for the lepton $p_{T}$. The last...","name":"Figure 2a aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t29","@type":"Dataset","description":"Comparison between data and prediction after the fit to data in the signal region for the lepton $\\eta$. The uncertainty...","name":"Figure 2b aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t30","@type":"Dataset","description":"Comparison between data and prediction after the fit to data in the signal region for the ${E}_{T}^{miss}$. The last bin...","name":"Figure 2c aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t31","@type":"Dataset","description":"Comparison between data and prediction after the fit to data in the signal region for the $m_{T}^{W}$. The last bin...","name":"Figure 2d aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t32","@type":"Dataset","description":"Nuisance parameters ranked according to their post-fit impacts on the best-fit value of the ratio $\\mu$ of the measured cross-section...","name":"Figure 3 aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t33","@type":"Dataset","description":"Correlation matrix of the nuisance parameters and of the ratio $\\mu$ of the measured cross-section to the predicted cross-section. The...","name":"Figure 4 aux"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t34","@type":"Dataset","description":"Distribution of the MEM discriminant $P(S|X)$ in the SR for MEM discriminant values larger than $2.0\\times10^{-4}$, for the collision data...","name":"Pseudo-data replicas"},{"@id":"https://doi.org/10.17182/hepdata.133620.v1/t35","@type":"Dataset","description":"Measured values of the signal cross-section and of the $t\\bar{t}$ and $W$+jets normalisation factors, obtained by statistical-only fits to the...","name":"Statistical-only fits to pseudo-data replicas"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2153660?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/133620"}],"inLanguage":"en","name":"Measurement of single top-quark production in the s-channel in proton$-$proton collisions at $\\mathrm{\\sqrt{s}=13}$ TeV with the ATLAS detector","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins2153660?version=1","version":1}