{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.95117.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1792999"}},{"@id":"https://doi.org/10.1016/j.physletb.2020.135609","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2020","description":"The first direct, model-independent measurement is presented of the modulus of the Cabibbo--Kobayashi--Maskawa (CKM) matrix elements $|V_{tb}|$, $|V_{td}|$, and $|V_{ts}|$, in final states enriched in single top quark $t$-channel events. The analysis uses proton-proton collision data from the LHC, collected during 2016 by the CMS experiment, at a centre-of-mass energy of 13 TeV, corresponding to an integrated luminosity of $35.9 fb^{-1}$. Processes directly sensitive to these matrix elements are considered at both the production and decay vertices of the top quark. In the standard model hypothesis of CKM unitarity, a lower limit of $|V_{tb}| > 0.970$ is measured at the $95\\%$ confidence level. Several theories beyond the standard model are considered, and by releasing all constraints among the involved parameters, the values $|V_{tb}| = 0.988 \\pm 0.024 $, and $|V_{td}|^2 +|V_{ts}|^2 = 0.06 \\pm 0.06$, where the uncertainties include both statistical and systematic components, are measured.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.95117.v1/t1","@type":"Dataset","description":"The $m_{W}^{T}$ distribution from data (points) and simulation (shaded histograms) in the 2j1t (left) and 3j1t (right) categories for the...","name":"Figure 2a"},{"@id":"https://doi.org/10.17182/hepdata.95117.v1/t2","@type":"Dataset","description":"The $m_{W}^{T}$ distribution from data (points) and simulation (shaded histograms) in the 2j1t (left) and 3j1t (right) categories for the...","name":"Figure 2b"},{"@id":"https://doi.org/10.17182/hepdata.95117.v1/t3","@type":"Dataset","description":"The $m_{W}^{T}$ distribution from data (points) and simulation (shaded histograms) in the 2j1t 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The...","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.95117.v1/t26","@type":"Dataset","description":"The signal strengths obtained under SM assumptions.","name":"The signal strengths obtained under SM assumptions."},{"@id":"https://doi.org/10.17182/hepdata.95117.v1/t27","@type":"Dataset","description":"Results obtained under SM assumptions.","name":"Results obtained under SM assumptions."},{"@id":"https://doi.org/10.17182/hepdata.95117.v1/t28","@type":"Dataset","description":"Results obtained under first BSM scenario.","name":"Results obtained under first BSM scenario."},{"@id":"https://doi.org/10.17182/hepdata.95117.v1/t29","@type":"Dataset","description":"Results obtained under second BSM scenario.","name":"Results obtained under second BSM scenario."}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1792999?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/95117"}],"inLanguage":"en","name":"Measurement of CKM matrix elements in single top quark $t$-channel production in proton-proton collisions at $\\sqrt{s} = $ 13 TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1792999?version=1","version":1}