{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.67150.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1328962"}},{"@id":"https://doi.org/10.1016/j.physletb.2015.04.060","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2015","description":"CERN-LHC. The first measurement of the cross section ratio $t\\bar{t}b\\bar{b}$ / $t\\bar{t}jj$ is presented using a data sample corresponding to an integrated luminosity of 19.6 inverse femtobarns collected in pp collisions at $\\sqrt{s}$ = 8 TeV with the CMS detector at the LHC. Events with two leptons ($e$ or $\\mu$) and four reconstructed jets, including two identified as b quark jets, in the final state are selected. The ratio is determined for a minimum jet transverse momentum pt of both 20 and 40 GeV. The measured ratio is 0.022 $\\pm$ 0.003 (stat.) $\\pm$ 0.005 (syst.) for $p_{\\rm T}$ > 20 GeV. The absolute cross sections $t\\bar{t}b\\bar{b}$ and $t\\bar{t}jj$ are also measured. The measured ratio for $p_{\\rm T}$ > 40 GeV is compatible with a theoretical quantum chromodynamics calculation at next-to-leading order.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.67150.v1/t1","@type":"Dataset","description":"The number of events for each physics process and for each dilepton category after fitting to the data, their total,...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.67150.v1/t2","@type":"Dataset","description":"Summary of the systematic uncertainties from various sources contributing to $\\sigma_{t\\bar{t}b\\bar{b}}$, $\\sigma_{t\\bar{t}jj}$, and the ratio $\\sigma_{t\\bar{t}b\\bar{b}/t\\bar{t}jj}$ for a jet pt...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.67150.v1/t3","@type":"Dataset","description":"The measured cross sections $\\sigma_{t\\bar{t}b\\bar{b}}$ and $\\sigma_{t\\bar{t}jj}$ and their ratio are given for the visible phase space (PS) defined as...","name":"Table 3"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1328962?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/67150"}],"inLanguage":"en","name":"Measurement of the cross section ratio sigma(t t-bar b b-bar) / sigma(t t-bar jj) in pp collisions at sqrt(s) = 8 TeV","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1328962?version=1","version":1}