{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.67921.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1351762"}},{"@id":"https://doi.org/10.1140/epjc/s10052-015-3518-2","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2015","description":"CERN-LHC.  Two searches for supersymmetric particles in final states containing a same-flavour opposite-sign lepton pair, jets and large missing transverse momentum are presented. The proton-proton collision data used in these searches were collected at a centre-of-mass energy $\\sqrt{s}=8$ TeV by the ATLAS detector at the Large Hadron Collider and corresponds to an integrated luminosity of 20.3 fb$^{-1}$. Two leptonic production mechanisms are considered: decays of squarks and gluinos with $Z$ bosons in the final state, resulting in a peak in the dilepton invariant mass distribution around the $Z$-boson mass; and decays of neutralinos (e.g. $\\tilde{\\chi}^{0}_{2} \\rightarrow \\ell^{+}\\ell^{-}\\tilde{\\chi}^{0}_{1}$), resulting in a kinematic endpoint in the dilepton invariant mass distribution. For the former, an excess of events above the expected Standard Model background is observed, with a significance of 3 standard deviations. In the latter case, the data are well-described by the expected Standard Model background. The results from each channel are interpreted in the context of several supersymmetric models involving the production of squarks and gluinos.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t1","@type":"Dataset","description":"The observed and expected dielectron invariant mass distribution in SR-Z. The negigible estimated contribution from Z+jets is omitted in these...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t2","@type":"Dataset","description":"The observed and expected dimuon invariant mass distribution in SR-Z. The negigible estimated contribution from Z+jets is omitted in these...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t3","@type":"Dataset","description":"The observed and expected $E_T^{miss}$ distribution in the dielectron SR-Z. The negigible estimated contribution from Z+jets is omitted in these...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t4","@type":"Dataset","description":"The observed and expected $E_T^{miss}$ distribution in the dimuon SR-Z. The negigible estimated contribution from Z+jets is omitted in these...","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t5","@type":"Dataset","description":"The observed and expected dielectron invariant mass distribution in SR-loose. The last bin contains the overflow.","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t6","@type":"Dataset","description":"The observed and expected dimuon invariant mass distribution in SR-loose. The last bin contains the overflow.","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t7","@type":"Dataset","description":"The observed and expected dielectron invariant mass distribution in the two-jet $b$-veto SR. The last bin contains the overflow.","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t8","@type":"Dataset","description":"The observed and expected dimuon invariant mass distribution in the two-jet $b$-veto SR. The last bin contains the overflow.","name":"Table 8"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t9","@type":"Dataset","description":"The observed and expected dielectron invariant mass distribution in the four jet b-veto SR. The last bin contains the overflow.","name":"Table 9"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t10","@type":"Dataset","description":"The observed and expected dimuon invariant mass distribution in the four-jet $b$-veto SR. The last bin contains the overflow.","name":"Table 10"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t11","@type":"Dataset","description":"The observed and expected dielectron invariant mass distribution in the two-jet $b$-tag SR. The last bin contains the overflow.","name":"Table 11"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t12","@type":"Dataset","description":"The observed and expected dimuon invariant mass distribution in two-jet $b$-tag SR. The last bin contains the overflow.","name":"Table 12"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t13","@type":"Dataset","description":"The observed and expected dielectron invariant mass distribution in the four-jet $b$-tag SR. The last bin contains the overflow.","name":"Table 13"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t14","@type":"Dataset","description":"The observed and expected dimuon invariant mass distribution in the four-jet $b$-tag SR. The last bin contains the overflow.","name":"Table 14"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t15","@type":"Dataset","description":"Expected 95% exclusion contour for the GGM model with $\\tan(\\beta)=1.5$ in SR-Z.","name":"Table 15"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t16","@type":"Dataset","description":"Observed 95% exclusion contour for the GGM model with $\\tan(\\beta)=1.5$ in SR-Z.","name":"Table 16"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t17","@type":"Dataset","description":"Expected 95% exclusion contour for the GGM model with $\\tan(\\beta)=30$ in SR-Z.","name":"Table 17"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t18","@type":"Dataset","description":"Observed 95% exclusion contour for the GGM model with $\\tan(\\beta)=30$ in SR-Z.","name":"Table 18"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t19","@type":"Dataset","description":"Expected 95% exclusion contour for the two-step first- and second-generation squark simplified model with sleptons in the two-jet $b$-veto SR.","name":"Table 19"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t20","@type":"Dataset","description":"Observed 95% exclusion contour for the two-step first- and second-generation squark simplified model with sleptons in the two-jet $b$-veto SR.","name":"Table 20"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t21","@type":"Dataset","description":"Expected 95% exclusion contour for the two-step gluino simplified model with sleptons in the four-jet $b$-veto SR.","name":"Table 21"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t22","@type":"Dataset","description":"Observed 95% exclusion contour for the two-step gluino simplified model with sleptons in the four-jet $b$-veto SR.","name":"Table 22"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t23","@type":"Dataset","description":"Number of generated events in the two-step gluino simplified model with sleptons.","name":"Table 23"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t24","@type":"Dataset","description":"Production cross-section in the two-step gluino simplified model with sleptons.","name":"Table 24"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t25","@type":"Dataset","description":"Number of generated events in the two-step first- and second-generation squark simplified model with sleptons.","name":"Table 25"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t26","@type":"Dataset","description":"Production cross-section in the two-step first- and second-generation squark simplified model with sleptons.","name":"Table 26"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t27","@type":"Dataset","description":"Number of generated events in the GGM model with $\\tan(\\beta)=1.5$.","name":"Table 27"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t28","@type":"Dataset","description":"Production cross-section in the GGM model with $\\tan(\\beta)=1.5$.","name":"Table 28"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t29","@type":"Dataset","description":"Number of generated events in the GGM model with $\\tan(\\beta)=30$.","name":"Table 29"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t30","@type":"Dataset","description":"Production cross-section in the GGM model with $\\tan(\\beta)=30$.","name":"Table 30"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t31","@type":"Dataset","description":"Total experimental uncertainty [%] for the two-step gluino simplified model with sleptons.","name":"Table 31"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t32","@type":"Dataset","description":"Total experimental uncertainty [%] for the GGM model with $\\tan(\\beta)=1.5$.","name":"Table 32"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t33","@type":"Dataset","description":"Total experimental uncertainty for the GGM model with $\\tan(\\beta)=30$.","name":"Table 33"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t34","@type":"Dataset","description":"Signal acceptance for the GGM model with $\\tan(\\beta)=1.5$ in the combined electron and muon SR-Z.","name":"Table 34"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t35","@type":"Dataset","description":"Signal acceptance for the GGM model with $\\tan(\\beta)=30$ in the combined electron and muon SR-Z.","name":"Table 35"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t36","@type":"Dataset","description":"Signal efficiency for the GGM model with $\\tan(\\beta)=1.5$ in the dielectron SR-Z.","name":"Table 36"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t37","@type":"Dataset","description":"Signal efficiency for the GGM model with $\\tan(\\beta)=30$ in the dielectron SR-Z.","name":"Table 37"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t38","@type":"Dataset","description":"Signal efficiency for the GGM model with $\\tan(\\beta)=1.5$ in the dimuon SR-Z.","name":"Table 38"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t39","@type":"Dataset","description":"Signal efficiency for the GGM model with $\\tan(\\beta)=30$ in the dimuon SR-Z.","name":"Table 39"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t40","@type":"Dataset","description":"Signal efficiency for the GGM model with $\\tan(\\beta)=1.5$ in the electron and muon combined SR-Z.","name":"Table 40"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t41","@type":"Dataset","description":"Signal efficiency for the GGM model with $\\tan(\\beta)=30$ in the the electron and muon combined SR-Z.","name":"Table 41"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t42","@type":"Dataset","description":"Signal acceptance for the two-step first- and second-generation squarks simplified model with sleptons in the two-jet $b$-veto SR.","name":"Table 42"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t43","@type":"Dataset","description":"Signal acceptance for the two-step gluino simplified model with sleptons in the four-jet $b$-veto SR.","name":"Table 43"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t44","@type":"Dataset","description":"Signal efficiency for the two-step first- and second-generation squarks simplified model with sleptons in the two-jet $b$-veto SR.","name":"Table 44"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t45","@type":"Dataset","description":"Signal efficiency for the two-step gluino simplified model with sleptons in the four-jet $b$-veto SR.","name":"Table 45"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t46","@type":"Dataset","description":"Upper limits on the signal cross-section at 95% CL for the GGM model with $\\tan(\\beta)=1.5$.","name":"Table 46"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t47","@type":"Dataset","description":"Observed CL$_{\\text{S}}$ for the GGM model with $\\tan(\\beta)=1.5$.","name":"Table 47"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t48","@type":"Dataset","description":"Expected CL$_{\\text{S}}$ for the GGM model with $\\tan(\\beta)=1.5$.","name":"Table 48"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t49","@type":"Dataset","description":"Upper limits on the signal cross-section at 95% CL for the GGM model with $\\tan(\\beta)=30$.","name":"Table 49"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t50","@type":"Dataset","description":"Observed CL$_{\\text{S}}$ for the GGM model with $\\tan(\\beta)=30$.","name":"Table 50"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t51","@type":"Dataset","description":"Expected CL$_{\\text{S}}$ for the GGM model with $\\tan(\\beta)=30$.","name":"Table 51"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t52","@type":"Dataset","description":"Upper limits on the signal stength at 95% CL for the two-step first- and second-generation squark simplified model with sleptons....","name":"Table 52"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t53","@type":"Dataset","description":"Upper limits on the signal stength at 95% CL for the two-step gluino simplified model with sleptons. The excluded signal...","name":"Table 53"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t54","@type":"Dataset","description":"Observed CL$_{\\text{S}}$ for the two-step first- and second-generation squark simplified model with sleptons.","name":"Table 54"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t55","@type":"Dataset","description":"Expected CL$_{\\text{S}}$ for the two-step first- and second-generation squark simplified model with sleptons.","name":"Table 55"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t56","@type":"Dataset","description":"Observed CL$_{\\text{S}}$ for the two-step gluino simplified model with sleptons.","name":"Table 56"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t57","@type":"Dataset","description":"Expected CL$_{\\text{S}}$ for the two-step gluino simplified model with sleptons.","name":"Table 57"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t58","@type":"Dataset","description":"Cutflow table for three benchmark signal points in SR-Z for the $ee$ and $\\mu\\mu$ channels separately. The three signal points...","name":"Table 58"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t59","@type":"Dataset","description":"Cutflow table for three benchmark signal points in the two jet b-veto SR of the off-$Z$ search for the $ee$...","name":"Table 59"},{"@id":"https://doi.org/10.17182/hepdata.67921.v1/t60","@type":"Dataset","description":"Cutflow table for three benchmark signal points in the four jet b-veto SR of the off-$Z$ search for the $ee$...","name":"Table 60"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1351762?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/67921"}],"inLanguage":"en","name":"Search for supersymmetry in events containing a same-flavour opposite-sign dilepton pair, jets, and large missing transverse momentum in $\\sqrt{s}=8$ TeV $pp$ collisions with the ATLAS detector","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1351762?version=1","version":1}