{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.68152.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1288061"}},{"@id":"https://doi.org/10.1103/PhysRevD.90.012004","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2015","description":"Search for production of dark matter particles recoiling against a leptonically decaying Z boson in 20.3 fb-1 of pp collisions at sqrt(s)=8 TeV with the ATLAS detector at the Large Hadron Collider. Events with large missing transverse momentum and two oppositely-charged electrons or muons consistent with the decay of a Z boson are analyzed. \n\nThe fiducial region is defined as:\n- 2e+MET or 2mu+MET\n- ptLepton > 20 GeV\n- |etaLepton| < 2.5\n- mll must be between 76 and 106 GeV\n- |phi_METZ|>2.5, where phi_METZ is the difference between the phi angles of the dilepton system and the MET.\n- |MET - pTZ| / pTZ < 0.5, where pTZ is the transverse momentum of the dilepton system.\n- |etaZ|<2.5, where etaZ is the pseudorapidity of the dilepton system.\n- No events with a jet for which ptJet > 25 GeV, |etaJet| < 2.5, and the jet is not within DeltaR<=0.2 of an electron.\n- No events with a third lepton for which ptLepton > 7 GeV\n- min(DeltaR(l,l)) > 0.2\n\n- Four signal regions defined by their MET selection: MET>150, MET>250, MET>350, MET>450 GeV.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.68152.v1/t1","@type":"Dataset","description":"Summary of the systematic uncertainties for the largest background process (ZZ->llnunu). Statistical uncertaintes are from MC simulation sample size.","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.68152.v1/t2","@type":"Dataset","description":"Observed yields and expected SM backgrounds in each signal region. Statistical, systematic, and luminosity uncertainteis are added in quadrature to...","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.68152.v1/t3","@type":"Dataset","description":"The observed and expected upper limits on the fiducial cross section at 95% C.L. for each signal region.","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.68152.v1/t4","@type":"Dataset","description":"Observed 90% C.L. lower limits on the mass scale, M*, of considered effective field theories as a function of mChi....","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.68152.v1/t5","@type":"Dataset","description":"Expected 95% C.L. upper limits on the cross section times branching fraction as a function of mChi. For each operator,...","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.68152.v1/t6","@type":"Dataset","description":"Observed 95% C.L. upper limits on the cross section times branching fraction as a function of mChi. For each operator,...","name":"Table 6"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1288061?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/68152"}],"inLanguage":"en","name":"Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at $\\sqrt{s}$=8 TeV with the ATLAS detector","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1288061?version=1","version":1}