dc.contributor.author | Aad, Georges | |
dc.contributor.author | Abbott, Brad | |
dc.contributor.author | Abdallah, Jalal | |
dc.contributor.author | Abdel Khalek, Samah | |
dc.contributor.author | Abdinov, Ovsat Bahram oglu | |
dc.contributor.author | Aben, Rosemarie | |
dc.contributor.author | Abi, Babak | |
dc.contributor.author | Abolins, Maris | |
dc.contributor.author | AbouZeid, Hass | |
dc.contributor.author | Abramowicz, Halina | |
dc.contributor.author | Buanes, Trygve | |
dc.contributor.author | Dale, Ørjan | |
dc.contributor.author | Eigen, Gerald | |
dc.contributor.author | Kastanas, Alex | |
dc.contributor.author | Liebig, Wolfgang | |
dc.contributor.author | Lipniacka, Anna | |
dc.contributor.author | Martin dit Latour, Bertrand | |
dc.contributor.author | Rosendahl, Peter Lundgaard | |
dc.contributor.author | Sandaker, Heidi | |
dc.contributor.author | Sjursen, Therese B. | |
dc.contributor.author | Smestad, Lillian | |
dc.contributor.author | Stugu, Bjarne | |
dc.contributor.author | Ugland, Maren | |
dc.contributor.author | Bugge, Lars | |
dc.contributor.author | Bugge, Magnar Kopangen | |
dc.contributor.author | Cameron, David Gordon | |
dc.contributor.author | Catmore, James Richard | |
dc.contributor.author | Czyczula, Zofia | |
dc.contributor.author | Franconi, Laura | |
dc.contributor.author | Gjelsten, Børge Kile | |
dc.contributor.author | Gramstad, Eirik | |
dc.contributor.author | Morisbak, Vanja | |
dc.contributor.author | Ould-Saada, Farid | |
dc.contributor.author | Pajchel, Katarina | |
dc.contributor.author | Pedersen, Maiken | |
dc.contributor.author | Read, Alexander Lincoln | |
dc.contributor.author | Røhne, Ole Myren | |
dc.contributor.author | Stapnes, Steinar | |
dc.contributor.author | Strandlie, Are | |
dc.contributor.author | Abreu, Henso | |
dc.contributor.author | Abreu, Rômulo F. | |
dc.contributor.author | Abulaiti, Yiming | |
dc.contributor.author | Acharya, Bobby S. | |
dc.contributor.author | Adamczyk, Leszek | |
dc.contributor.author | Adams, David | |
dc.contributor.author | Adelman, Jareed | |
dc.contributor.author | Adomeit, Stefanie | |
dc.contributor.author | Adye, Tim | |
dc.contributor.author | Agatonovic-Jovin, Tatjana | |
dc.contributor.author | Aguilar Saavedra, Juan Antonio | |
dc.contributor.author | ATLAS, Collaboration | |
dc.date.accessioned | 2016-03-31T11:44:11Z | |
dc.date.available | 2016-03-31T11:44:11Z | |
dc.date.issued | 2015-04-08 | |
dc.Published | Physical Review Letters 2015, 114:142001 | eng |
dc.identifier.issn | 1079-7114 | en_US |
dc.identifier.uri | https://hdl.handle.net/1956/11795 | |
dc.description.abstract | A measurement of spin correlation in tt ¯ production is presented using data collected with the ATLAS detector at the Large Hadron Collider in proton-proton collisions at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 20.3 fb −1 . The correlation between the top and antitop quark spins is extracted from dilepton tt ¯ events by using the difference in the azimuthal angle between the two charged leptons in the laboratory frame. In the helicity basis the measured degree of correlation corresponds to A helicity =0.38±0.04 , in agreement with the standard model prediction. A search is performed for pair production of top squarks with masses close to the top quark mass decaying to predominantly right-handed top quarks and a light neutralino, the lightest supersymmetric particle. Top squarks with masses between the top quark mass and 191 GeV are excluded at the 95% confidence level. | en_US |
dc.language.iso | eng | eng |
dc.publisher | American Physical Society | en_US |
dc.rights | Attribution CC BY 3.0 | eng |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0 | eng |
dc.title | Measurement of Spin Correlation in Top-Antitop Quark Events and Search for Top Squark Pair Production in pp Collisions at s√=8 TeV Using the ATLAS Detector | en_US |
dc.type | Peer reviewed | |
dc.type | Journal article | |
dc.date.updated | 2015-12-30T17:02:20Z | |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright 2015 CERN, for the ATLAS Collaboration | en_US |
dc.identifier.doi | https://doi.org/10.1103/physrevlett.114.142001 | |
dc.identifier.cristin | 1245837 | |
dc.subject.nsi | VDP::Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 | |
dc.subject.nsi | VDP::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 | |
dc.subject.nsi | VDP::Matematikk og Naturvitenskap: 400 | en_US |