{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.85868.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1634835"}},{"@id":"https://doi.org/10.1140/epjc/s10052-018-5752-x","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2020","description":"A study of the associated production of a Z boson and a charm quark jet (Z+c), and a comparison to production with a b quark jet (Z+b), in pp collisions at a centre-of-mass energy of 8 TeV are presented. The analysis uses a data sample corresponding to an integrated luminosity of 19.7 fb$^{-1}$, collected with the CMS detector at the CERN LHC. The Z boson candidates are identified through their decays into pairs of electrons or muons. Jets originating from heavy flavour quarks are identified using semileptonic decays of c or b flavoured hadrons and hadronic decays of charm hadrons. The measurements are performed in the kinematic region with two leptons with $p_T^l > 20$ GeV, $|\\eta_l| < 2.1$, $71 < m_{\\ell\\ell} < 111$ GeV, and heavy flavour jets with $p_T^{\\text{jet}} > 25$ GeV and $|\\eta_\\text{jet}| < 2.5$. The Z+c production cross section is measured to $\\sigma(pp \\to Z + c + X) \\mathcal{B}(Z \\to \\ell^+\\ell^-) = 8.8 \\pm 0.5$ (stat) $\\pm 0.6$ (syst) pb. The ratio of the Z+c and Z+b production cross sections is measured to be $\\sigma(pp \\to Z + c + X)/\\sigma(pp \\to Z + b + X) = 2.0 \\pm 0.2$ (stat) $\\pm 0.2$ (syst). The Z+c production cross section and the cross section ratio are also measured as a function of the transverse momentum of the Z boson and of the heavy flavour jet. The measurements are compared with theoretical predictions.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.85868.v1/t1","@type":"Dataset","description":"Signal yields N(Z+c) and N(Z+b), efficiency*acceptance correction factors C(Z+c) and C(Z+b), cross section sigma(Z+c)B and cross section ratios sigma(Z+c)/sigma(Z+b) in...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.85868.v1/t2","@type":"Dataset","description":"Z+c and Z+b signal yields, differential cross section dsigma(Z+c)/dpTZ times branching ratio and differential cross sections ratio dsigma(Z+c)/dpTZ / dsigma(Z+b)/dpTZ...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.85868.v1/t3","@type":"Dataset","description":"Z+c and Z+b signal yields, differential cross section dsigma(Z+c)/dpTZ times branching ratio and differential cross sections ratio dsigma(Z+c)/dpTZ / dsigma(Z+b)/dpTZ...","name":"Table 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a primary particle for events...","name":"Figure 3 b"},{"@id":"https://doi.org/10.17182/hepdata.85868.v1/t12","@type":"Dataset","description":"Transverse momentum distribution of the c-tagged jet normalized to unity, in simulated W+c and Z+c samples and in W+c data...","name":"Figure 4 a"},{"@id":"https://doi.org/10.17182/hepdata.85868.v1/t13","@type":"Dataset","description":"Number of reconstructed secondary vertices normalized to unity, in simulated W+c and Z+c samples and in W+c data events.","name":"Figure 4 b"},{"@id":"https://doi.org/10.17182/hepdata.85868.v1/t14","@type":"Dataset","description":"Distribution of the corrected secondary-vertex mass normalized to unity, in simulated W + c and Z + c samples, and...","name":"Figure 5 a"},{"@id":"https://doi.org/10.17182/hepdata.85868.v1/t15","@type":"Dataset","description":"Distribution of the JP discriminant for the D\u00b1 mode normalized to unity, in simulated W + c and Z +...","name":"Figure 5 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