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dc.contributor.authorATLAS Collaboration
dc.date.accessioned2018-11-05T21:13:21Z
dc.date.available2018-11-05T21:13:21Z
dc.date.issued2017-03-22
dc.identifier.citationThe ATLAS collaboration, Aaboud, M., Aad, G. et al. J. High Energ. Phys. (2017) 2017: 113. https://doi.org/10.1007/JHEP03(2017)113en_US
dc.identifier.urihttp://hdl.handle.net/1808/27212
dc.description.abstractMeasurements of top quark spin observables in tt¯ events are presented based on 20.2 fb−1 of s√=8 TeV proton-proton collisions recorded with the ATLAS detector at the LHC. The analysis is performed in the dilepton final state, characterised by the presence of two isolated leptons (electrons or muons). There are 15 observables, each sensitive to a different coefficient of the spin density matrix of tt¯ production, which are measured independently. Ten of these observables are measured for the first time. All of them are corrected for detector resolution and acceptance effects back to the parton and stable-particle levels. The measured values of the observables at parton level are compared to Standard Model predictions at next-to-leading order in QCD. The corrected distributions at stable-particle level are presented and the means of the distributions are compared to Monte Carlo predictions. No significant deviation from the Standard Model is observed for any observable.en_US
dc.publisherSpringer Verlagen_US
dc.rights© The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.en_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subjectHadron-Hadron scattering (experiments)en_US
dc.titleMeasurements of top quark spin observables in tt¯ events using dilepton final states in √ s = 8 TeV pp collisions with the ATLAS detectoren_US
dc.typeArticleen_US
kusw.kudepartmentPhysics and Astronomyen_US
dc.identifier.doi10.1007/JHEP03(2017)113en_US
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item meets KU Open Access policy criteria.en_US
dc.rights.accessrightsopenAccessen_US


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© The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Except where otherwise noted, this item's license is described as: © The Author(s) 2017. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.