dc.contributor.author | Aad, Georges | |
dc.contributor.author | Abbott, Brad | |
dc.contributor.author | Abbott, Dale C. | |
dc.contributor.author | Abed Abud, Adam | |
dc.contributor.author | Abeling, Kira | |
dc.contributor.author | Abhayasinghe, Deshan Kavishka | |
dc.contributor.author | Abidi, Syed Haider | |
dc.contributor.author | AbouZeid, Ossama Sherif Alexander | |
dc.contributor.author | Abraham, Nadine L. | |
dc.contributor.author | Abramowicz, Halina | |
dc.contributor.author | Bjørke, Kristian | |
dc.contributor.author | Bugge, Magnar Kopangen | |
dc.contributor.author | Cameron, David Gordon | |
dc.contributor.author | Catmore, James Richard | |
dc.contributor.author | Garonne, Vincent | |
dc.contributor.author | Gramstad, Eirik | |
dc.contributor.author | Heggelund, Andreas | |
dc.contributor.author | Hellesund, Simen | |
dc.contributor.author | Håland, Even Simonsen | |
dc.contributor.author | Morisbak, Vanja | |
dc.contributor.author | Oppen, Henrik | |
dc.contributor.author | Ould-Saada, Farid | |
dc.contributor.author | Pedersen, Maiken | |
dc.contributor.author | Read, Alexander Lincoln | |
dc.contributor.author | Rye, Eli Bæverfjord | |
dc.contributor.author | Røhne, Ole Myren | |
dc.contributor.author | Sandaker, Heidi | |
dc.contributor.author | Vadla, Knut Oddvar Høie | |
dc.contributor.author | Buanes, Trygve | |
dc.contributor.author | Djuvsland, Julia Isabell | |
dc.contributor.author | Eigen, Gerald | |
dc.contributor.author | Fomin, Nikolai | |
dc.contributor.author | Latour, Bertrand Pascal Christian | |
dc.contributor.author | Lee, Graham Richard | |
dc.contributor.author | Lipniacka, Anna | |
dc.contributor.author | Stugu, Bjarne Sandvik | |
dc.contributor.author | Træet, Are Sivertsen | |
dc.contributor.author | Abreu, Henso | |
dc.contributor.author | Abulaiti, Yiming | |
dc.contributor.author | Acharya, Bobby S. | |
dc.contributor.author | Achkar, Baida | |
dc.contributor.author | Adam, Lennart | |
dc.contributor.author | Adam-Bourdarios, Claire | |
dc.contributor.author | Adamczyk, Leszek | |
dc.contributor.author | Adamek, Lukas | |
dc.contributor.author | Adelman, Jareed | |
dc.contributor.author | Adigüzel, Aytül | |
dc.contributor.author | Adorni, Sofia | |
dc.contributor.author | Adye, Tim | |
dc.contributor.author | Affolder, Anthony Allen | |
dc.contributor.author | ATLAS, Collaboration | |
dc.date.accessioned | 2022-03-31T12:00:54Z | |
dc.date.available | 2022-03-31T12:00:54Z | |
dc.date.created | 2022-02-17T18:59:03Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 1434-6044 | |
dc.identifier.uri | https://hdl.handle.net/11250/2988849 | |
dc.description.abstract | Measurements of both the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson (tt¯Ztt¯Z) are presented. The measurements are performed by targeting final states with three or four isolated leptons (electrons or muons) and are based on s√=13s=13 TeV proton–proton collision data with an integrated luminosity of 139 fb−1fb−1, recorded from 2015 to 2018 with the ATLAS detector at the CERN Large Hadron Collider. The inclusive cross section is measured to be σtt¯Z=0.99±0.05σtt¯Z=0.99±0.05 (stat.) ±0.08±0.08 (syst.) pb, in agreement with the most precise theoretical predictions. The differential measurements are presented as a function of a number of kinematic variables which probe the kinematics of the tt¯Ztt¯Z system. Both absolute and normalised differential cross-section measurements are performed at particle and parton levels for specific fiducial volumes and are compared with theoretical predictions at different levels of precision, based on a χ2/χ2/ndf and p value computation. Overall, good agreement is observed between the unfolded data and the predictions. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Measurements of the inclusive and differential production cross sections of a top-quark–antiquark pair in association with a Z boson at √s = 13 TeV with the ATLAS detector | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | Copyright CERN for the benefit of ATLAS collaboration 2021 | en_US |
dc.source.articlenumber | 737 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 2 | |
dc.identifier.doi | 10.1140/epjc/s10052-021-09439-4 | |
dc.identifier.cristin | 2003062 | |
dc.source.journal | European Physical Journal C | en_US |
dc.subject.nsi | VDP::Kjerne- og elementærpartikkelfysikk: 431 | en_US |
dc.subject.nsi | VDP::Nuclear and elementary particle physics: 431 | en_US |
dc.identifier.citation | European Physical Journal C. 2021, 81, 737. | en_US |
dc.source.volume | 81 | en_US |