{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.83809.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1666824"}},{"@id":"https://doi.org/10.1103/PhysRevLett.120.231801","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"CMS Collaboration"},"creator":{"@type":"Organization","name":"CMS Collaboration"},"datePublished":"2018","description":"The observation of Higgs boson production in association with a top quark-antiquark pair is reported, based on a combined analysis of proton-proton collision data at center-of-mass energies of $\\sqrt{s}=$ 7, 8, and 13 TeV, corresponding to integrated luminosities of up to 5.1, 19.7, and 35.9 fb$^{-1}$, respectively. The data were collected with the CMS detector at the CERN LHC. The results of statistically independent searches for Higgs bosons produced in conjunction with a top quark-antiquark pair and decaying to pairs of W bosons, Z bosons, photons, $\\tau$ leptons, or bottom quark jets are combined to maximize sensitivity. An excess of events is observed, with a significance of 5.2 standard deviations, over the expectation from the background-only hypothesis. The corresponding expected significance from the standard model for a Higgs boson mass of 125.09 GeV is 4.2 standard deviations. The combined best fit signal strength normalized to the standard model prediction is 1.26 ${^{+0.31}_{-0.26}}$.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.83809.v1/t1","@type":"Dataset","description":"Best fit value of the ttH signal strength modifier $\\mu_{\\mathrm{ttH}}$, with its 1 and 2 standard deviation confidence intervals ($\\sigma$),...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.83809.v1/t2","@type":"Dataset","description":"Best fit value, with its uncertainty, of the ttH signal strength modifier $\\mu_{\\mathrm{ttH}}$, for the five individual decay channels considered,...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.83809.v1/t3","@type":"Dataset","description":"Distribution of events as a function of the decimal logarithm of S/B, where S and B are the expected post-fit...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.83809.v1/t4","@type":"Dataset","description":"The test statistic q as a function of $\\mu_{\\mathrm{ttH}}$ for all decay modes at 7+8 TeV and at 13 TeV,...","name":"Table 4"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1666824?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/83809"}],"inLanguage":"en","name":"Observation of $\\mathrm{t\\overline{t}}$H production","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1666824?version=1","version":1}