{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.64900.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1249595"}},{"@id":"https://doi.org/10.1007/JHEP10(2013)167","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2014","description":"CERN-LHC.  The W-boson helicity fractions in top-quark decays are  measured with ttbar events in the lepton+jets final state, using proton-proton  collisions at a centre-of-mass energy of 7 TeV, collected in 2011 with the CMS  detector at the LHC. The data sample corresponds to an integrated luminosity  of 5.0 inverse femtobarns. The measured fractions of longitudinal, left-, and  right-handed helicity are F0 = 0.682 +/- 0.030 (stat.) +/- 0.033 (syst.),  FL = 0.310 +/- 0.022 (stat.) +/- 0.022 (syst.), and  FR = 0.008 +/- 0.012 (stat.) +/- 0.014 (syst.), consistent with the standard  model predictions. The measured fractions are used to probe the existence of  anomalous Wtb couplings. Exclusion limits on the real components of the  anomalous couplings gL, gR are also derived.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.64900.v1/t1","@type":"Dataset","description":"Measurements of the W-boson helicity fractions from the cos(theta*) (leptonic branch) distributions. The columns show the fit type, the decay...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.64900.v1/t2","@type":"Dataset","description":"Measurements of the W-boson helicity fractions from the cos(theta*) (leptonic branch) and |cos^(had) theta*| (hadronic branch) distributions. The columns show...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.64900.v1/t3","@type":"Dataset","description":"The combined helicity fractions and their uncertainties, including the type of fit performed, the channels (l=e,mu combination) and branches of...","name":"Table 3"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1249595?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/64900"}],"inLanguage":"en","name":"Measurement of the W-boson helicity in top-quark decays from ttbar production in lepton+jets events in pp collisions at sqrt(s)=7 TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1249595?version=1","version":1}