{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.77997.v2","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1604889"}},{"@id":"https://doi.org/10.1007/JHEP08(2017)006","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2017","description":"A search for direct top squark pair production resulting in events with either a same-flavour opposite-sign dilepton pair with invariant mass compatible with a $Z$ boson or a pair of jets compatible with a Standard Model (SM) Higgs boson ($h$) is presented. Requirements on additional leptons, jets, jets identified as originating from b-quarks, and missing transverse momentum are imposed to target the other decay products of the top squark pair. The analysis is performed using proton-proton collision data at sqrt{s} = 13 TeV collected with the ATLAS detector at the LHC in 2015-2016, corresponding to an integrated luminosity of 36.1 fb$^{\u22121}$. No excess is observed in the data with respect to the expected SM predictions. The results are interpreted in two sets of models. In the first set, direct production of pairs of lighter top squarks ($\\tilde{t}_1$) with long decay chains involving $Z$ or Higgs bosons is considered. The second set includes direct pair production of the heavier top squark pairs ($\\tilde{t}_2$) decaying via $\\tilde{t}_2 \\rightarrow Z \\tilde{t}_1$ or $\\tilde{t}_2 \\rightarrow h \\tilde{t}_1$. The results exclude at 95% confidence level $\\tilde{t}_2$ and $\\tilde{t}_1$ masses up to about 800 GeV, extending the exclusion region of supersymmetric parameter space covered by previous LHC searches.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t1","@type":"Dataset","description":"Jet multiplicity distributions in control regions CR$^{3\\ell 1b}_{t\\bar{t}Z}$, after normalising the $t\\bar{t}Z$ and multi-boson background processes via the simultaneous fit...","name":"Figure 2a"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t2","@type":"Dataset","description":"Jet multiplicity distributions in control region CR$^{3\\ell 1b}_{VV}$, after normalising the $t\\bar{t}Z$ and multi-boson background processes via the simultaneous fit...","name":"Figure 2b"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t3","@type":"Dataset","description":"Jet multiplicity distributions in control regions CR$^{1\\ell 4b}_{t\\bar{t},A}$, after normalising the $t\\bar{t}$ background process via the simultaneous fit described in...","name":"Figure 3a"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t4","@type":"Dataset","description":"Jet multiplicity distributions in control regions CR$^{1\\ell 4b}_{t\\bar{t},B}$, after normalising the $t\\bar{t}$ background process via the simultaneous fit described in...","name":"Figure 3b"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t5","@type":"Dataset","description":"Jet multiplicity distributions in control regions CR$^{1\\ell 4b}_{t\\bar{t},C}$, after normalising the $t\\bar{t}$ background process via the simultaneous fit described in...","name":"Figure 3c"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t6","@type":"Dataset","description":"Distribution of $E^{T}_\\text{miss}$ for events passing all the signal candidate selection requirements, except that on $E^{T}_\\text{miss}$, for SR$^{3\\ell 1b}_A$ after...","name":"Figure 4a"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t7","@type":"Dataset","description":"Distribution of $E^{T}_\\text{miss}$ for events passing all the signal candidate selection requirements, except that on $E^{T}_\\text{miss}$, for SR$^{3\\ell 1b}_B$ after...","name":"Figure 4c"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t8","@type":"Dataset","description":"Distribution of $E^{T}_\\text{miss}$ for events passing all the signal candidate selection requirements, except that on $E^{T}_\\text{miss}$, for SR$^{3\\ell 1b}_C$ after...","name":"Figure 4e"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t9","@type":"Dataset","description":"Distribution of $E^{T}_\\text{miss}$ for events passing all the signal candidate selection requirements, except that on $E^{T}_\\text{miss}$, for SR$^{1\\ell 4b}_A$ after...","name":"Figure 4b"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t10","@type":"Dataset","description":"Distribution of $E^{T}_\\text{miss}$ for events passing all the signal candidate selection requirements, except that on $E^{T}_\\text{miss}$, for SR$^{1\\ell 4b}_B$ after...","name":"Figure 4d"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t11","@type":"Dataset","description":"Distribution of $E^{T}_\\text{miss}$ for events passing all the signal candidate selection requirements, except that on $E^{T}_\\text{miss}$, for SR$^{1\\ell 4b}_C$ after...","name":"Figure 4f"},{"@id":"https://doi.org/10.17182/hepdata.77997.v2/t12","@type":"Dataset","description":"Expected exclusion limits at 95% CL from the analysis of $36.1 \\; 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