{"@context":"http://schema.org","@id":"https://doi.org/10.17182/hepdata.68640.v1","@reverse":{"isBasedOn":[{"@type":"ScholarlyArticle","identifier":{"@type":"PropertyValue","propertyID":"URL","value":"https://inspirehep.net/literature/1376482"}},{"@id":"https://doi.org/10.1140/epjc/s10052-015-3609-0","@type":"JournalArticle"}]},"@type":"Dataset","additionalType":"Collection","author":{"@type":"Organization","name":"ATLAS Collaboration"},"creator":{"@type":"Organization","name":"ATLAS Collaboration"},"datePublished":"2015","description":"Many extensions of the Standard Model predict the existence of charged heavy long-lived particles, such as $R$-hadrons or charginos. These particles, if produced at the Large Hadron Collider, should be moving non-relativistically and are therefore identifiable through the measurement of an anomalously large specific energy loss in the ATLAS pixel detector. Measuring heavy long-lived particles through their track parameters in the vicinity of the interaction vertex provides sensitivity to metastable particles with lifetimes from 0.6 ns to 30 ns. A search for such particles with the ATLAS detector at the Large Hadron Collider is presented, based on a data sample corresponding to an integrated luminosity of 18.4 fb$^{-1}$ of $pp$ collisions at $\\sqrt{s}$ = 8 TeV. No significant deviation from the Standard Model background expectation is observed, and lifetime-dependent upper limits on $R$-hadrons and chargino production are set. Gluino $R$-hadrons with 10 ns lifetime and masses up to 1185 GeV are excluded at 95$\\%$ confidence level, and so are charginos with 15 ns lifetime and masses up to 482 GeV.","hasPart":[{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t1","@type":"Dataset","description":"Ratio of the reconstructed mass, computed as the most probable value of a fit to a Landau distribution convolved with...","name":"Table 1"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t2","@type":"Dataset","description":"Efficiency for the calorimetric MET>80 GeV trigger as a function of the stable R-hadron mass.","name":"Table 2"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t3","@type":"Dataset","description":"Efficiency for the calorimetric MET>80 GeV trigger as a function of the metastable R-hadron mass. The R-hadron decays to g/qq...","name":"Table 3"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t4","@type":"Dataset","description":"Efficiency for the calorimetric MET>80 GeV trigger as a function of the metastable R-hadron mass. The R-hadron decays to g/qq...","name":"Table 4"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t5","@type":"Dataset","description":"Efficiency for the calorimetric MET>80 GeV trigger as a function of the metastable R-hadron mass. The R-hadron decays to g/qq...","name":"Table 5"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t6","@type":"Dataset","description":"Efficiency for the calorimetric MET>80 GeV trigger as a function of the stable chargino mass.","name":"Table 6"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t7","@type":"Dataset","description":"Total selection efficiency as a function of the stable R-hadron mass.","name":"Table 7"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t8","@type":"Dataset","description":"Total selection efficiency as a function of the metastable R-hadron mass. The R-hadron decays to g/qq plus neutralino of mass...","name":"Table 8"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t9","@type":"Dataset","description":"Total selection efficiency as a function of the metastable R-hadron mass. The R-hadron decays to g/qq plus neutralino of mass...","name":"Table 9"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t10","@type":"Dataset","description":"Total selection efficiency as a function of the metastable R-hadron mass. The R-hadron decays to g/qq plus neutralino of mass...","name":"Table 10"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t11","@type":"Dataset","description":"Total selection efficiency as a function of the stable chargino mass.","name":"Table 11"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t12","@type":"Dataset","description":"Ionisation distribution of all the CR2 tracks, and those not matched to a reconstructed muon. The two distributions are normalised...","name":"Table 12"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t13","@type":"Dataset","description":"Distribution of the mass of selected candidates, derived from the specific ionisation loss, for an example of gluino R-hadron signal,...","name":"Table 13"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t14","@type":"Dataset","description":"Distribution of the mass of selected candidates, derived from the specific ionisation loss, for one example of chargino signal, for...","name":"Table 14"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t15","@type":"Dataset","description":"Distribution of the mass of selected candidates, derived from the specific ionisation loss, for background and data, for searches for...","name":"Table 15"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t16","@type":"Dataset","description":"Distribution of the mass of selected candidates, derived from the specific ionisation loss, for an example of gluino R-hadron signal,...","name":"Table 16"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t17","@type":"Dataset","description":"Distribution of the mass of selected candidates, derived from the specific ionisation loss, for an example of chargino signal, for...","name":"Table 17"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t18","@type":"Dataset","description":"Distribution of the mass of selected candidates, derived from the specific ionisation loss, for background and data. The expected background...","name":"Table 18"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t19","@type":"Dataset","description":"Theoretical values for the cross section of gluino pairs production with their uncertainty.","name":"Table 19"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t20","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with lifetime tau...","name":"Table 20"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t21","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with...","name":"Table 21"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t22","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with lifetime tau...","name":"Table 22"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t23","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with...","name":"Table 23"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t24","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 24"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t25","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 25"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t26","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 26"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t27","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 27"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t28","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 28"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t29","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 29"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t30","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 30"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t31","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 31"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t32","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 32"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t33","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 33"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t34","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 34"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t35","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into g/qq plus a...","name":"Table 35"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t36","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with lifetime tau...","name":"Table 36"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t37","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with...","name":"Table 37"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t38","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with lifetime tau...","name":"Table 38"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t39","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with...","name":"Table 39"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t40","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 40"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t41","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 41"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t42","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 42"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t43","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 43"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t44","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 44"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t45","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 45"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t46","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 46"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t47","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 47"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t48","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 48"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t49","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 49"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t50","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 50"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t51","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for gluino R-hadrons decaying into tt plus a...","name":"Table 51"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t52","@type":"Dataset","description":"Theoretical values for the production cross section of charginos or chargino/neutralino pairs, with their uncertainty.","name":"Table 52"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t53","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable charginos, with lifetime tau =1.0...","name":"Table 53"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t54","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable charginos, with lifetime...","name":"Table 54"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t55","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of chargino mass for charginos decaying into neutralino plus pion, with...","name":"Table 55"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t56","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of chargino mass for charginos decaying into neutralino plus pion, with...","name":"Table 56"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t57","@type":"Dataset","description":"The expected excluded range of lifetimes as a function of chargino mass for charginos decaying into neutralino plus pion, with...","name":"Table 57"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t58","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of chargino mass for charginos decaying into neutralino plus pion, with...","name":"Table 58"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t59","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of chargino mass for charginos decaying into neutralino plus pion, with...","name":"Table 59"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t60","@type":"Dataset","description":"The observed excluded range of lifetimes as a function of gluino mass for chargino mass for charginos decaying into neutralino...","name":"Table 60"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t61","@type":"Dataset","description":"dEdx ionization for data, 1 TeV gluino R-hadrons stable and decaying in 100 GeV neutralinos with a 10 ns lifetime...","name":"Table 61"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t62","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for stable gluino R-hadrons, in case of...","name":"Table 62"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t63","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for stable gluino R-hadrons.","name":"Table 63"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t64","@type":"Dataset","description":"Theoretical values for the cross section of squark pairs production with their uncertainty.","name":"Table 64"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t65","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for stable sbottom R-hadrons, in case of...","name":"Table 65"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t66","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for stable sbottom $R$-hadrons. Cross...","name":"Table 66"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t67","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for stop R-hadrons, in case of background...","name":"Table 67"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t68","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for stop R-hadrons.","name":"Table 68"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t69","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for stable charginos, in case of background...","name":"Table 69"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t70","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for stable charginos.","name":"Table 70"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t71","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with lifetime tau=1.0...","name":"Table 71"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t72","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with...","name":"Table 72"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t73","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with lifetime tau=1.0...","name":"Table 73"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t74","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with...","name":"Table 74"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t75","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with lifetime tau=1.0...","name":"Table 75"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t76","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with...","name":"Table 76"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t77","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with lifetime tau=1.0...","name":"Table 77"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t78","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable gluino R-hadrons, with...","name":"Table 78"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t79","@type":"Dataset","description":"Expected upper limits on the production cross section as a function of mass for metastable charginos, with lifetime tau =15...","name":"Table 79"},{"@id":"https://doi.org/10.17182/hepdata.68640.v1/t80","@type":"Dataset","description":"Observed 95 PCT upper limits on the production cross section as a function of mass for metastable charginos, with lifetime...","name":"Table 80"}],"identifier":[{"@type":"PropertyValue","propertyID":"HEPDataRecord","value":"https://www.hepdata.net/record/ins1376482?version=1"},{"@type":"PropertyValue","propertyID":"HEPDataRecordAlt","value":"https://www.hepdata.net/record/68640"}],"inLanguage":"en","name":"Search for metastable heavy charged particles with large ionisation energy loss in $pp$ collisions at $\\sqrt{s}$ = 8 TeV using the ATLAS experiment","provider":{"@type":"Organization","name":"HEPData"},"publisher":{"@type":"Organization","name":"HEPData"},"url":"https://www.hepdata.net/record/ins1376482?version=1","version":1}