{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.144221.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/2702153"}},{"@id":"https://doi.org/10.1007/JHEP01(2024)101","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2023","description":"The polarization of $\\tau^{-}$ leptons is measured using leptonic and hadronic $\\tau^{-}$ lepton decays in  $Z\\rightarrow \\tau^{+}\\tau^{-}$ events in proton-proton collisions at $\\sqrt{s}=13\\,\\mathrm{TeV}$ recorded by CMS at the CERN LHC with an integrated luminosity of $36.3\\,\\mathrm{fb}^{-1}$.The measured $\\tau^{-}$ polarization at the $\\mathrm{Z}$ boson mass pole is $\\mathcal{P}_{\\tau}(\\mathrm{Z})=-0.144\\pm0.006\\,(\\text{stat})\\,\\pm0.014\\,(\\text{syst})=-0.144\\pm0.015$,in good agreement with the measurement of the $\\tau$ lepton asymmetry parameter of $A_{\\tau}=0.1439\\pm0.0043=-\\mathcal{P}_{\\tau}(\\mathrm{Z})$ at LEP.The $\\tau$ polarization depends on the ratio of the vector to axial-vector couplings of the $\\tau$ leptons in the neutral current expression, and thus on the effective weak mixing angle $ \\sin^{2}\\theta_{\\mathrm{W}}^{\\mathrm{eff}}$, independently of the $\\mathrm{Z}$ boson production mechanism.The obtained value $ \\sin^{2}\\theta_{\\mathrm{W}}^{\\mathrm{eff}}=0.2319\\pm0.0008\\,(\\text{stat})\\pm0.0018\\,(\\text{syst})=0.2319\\pm0.0019$is in good agreement with measurements at $\\mathrm{e^{+}e^{-}}$ colliders.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.144221.v1/t1","@type":"Dataset","description":"Fit results for the average $\\tau^{-}$ lepton polarization for the 11 event categories and the combined fit as the lowest...","name":"Fig9a"},{"@id":"https://doi.org/10.17182/hepdata.144221.v1/t2","@type":"Dataset","description":"Fit results for the average $\\tau^{-}$ lepton polarization for categories grouped into 4 channels.","name":"Fig9b"},{"@id":"https://doi.org/10.17182/hepdata.144221.v1/t3","@type":"Dataset","description":"A comparison of the $\\tau$ lepton asymmetry, $A_{\\tau}$ measured from the tau lepton polarization in this paper and other measurements.","name":"Fig10"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins2702153?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/144221"}],"inLanguage":"en","name":"Measurement of the $\\tau$ lepton polarization in Z boson decays 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/ins2702153?version=1","version":1}