Measurements of top-quark pair differential cross-sections in the eμ channel in pp collisions at √s=13TeV using the ATLAS detector

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dc.contributor.authorAaboud, M.
dc.contributor.authorAlbert, Justin
dc.contributor.authorDavid, Claire
dc.contributor.authorElliot, Alison A.
dc.contributor.authorFincke-Keeler, J.
dc.contributor.authorHamano, Kenji
dc.contributor.authorHill, Ewan Chin
dc.contributor.authorKeeler, Richard
dc.contributor.authorKowalewski, Robert
dc.contributor.authorKuwertz, E. S.
dc.contributor.authorKwan, Tony
dc.contributor.authorLeBlanc, Matthew Edgar
dc.contributor.authorLefebvre, Michel
dc.contributor.authorMcPherson, Robert A.
dc.contributor.authorPearce, James D.
dc.contributor.authorSeuster, Rolf
dc.contributor.authorSobie, Randall J.
dc.contributor.authorTrovatelli, M.
dc.contributor.authorVenturi, M.
dc.contributor.authorATLAS Collaboration
dc.date.accessioned2020-02-18T17:53:24Z
dc.date.available2020-02-18T17:53:24Z
dc.date.copyright2017en_US
dc.date.issued2017
dc.description.abstractThis article presents measurements of tt¯ differential cross-sections in a fiducial phase-space region, using an integrated luminosity of 3.2 fb−1 of proton–proton data at a centre-of-mass energy of s√=13 TeV recorded by the ATLAS experiment at the LHC in 2015. Differential cross-sections are measured as a function of the transverse momentum and absolute rapidity of the top quark, and of the transverse momentum, absolute rapidity and invariant mass of the tt¯ system. The tt¯ events are selected by requiring one electron and one muon of opposite electric charge, and at least two jets, one of which must be tagged as containing a b-hadron. The measured differential cross-sections are compared to predictions of next-to-leading order generators matched to parton showers and the measurements are found to be consistent with all models within the experimental uncertainties with the exception of the Powheg-Box + Herwig++ predictions, which differ significantly from the data in both the transverse momentum of the top quark and the mass of the tt¯ system.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipWe thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DSM/IRFU, France; SRNSF, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, the Canada Council, CANARIE, CRC, Compute Canada, FQRNT, and the Ontario Innovation Trust, Canada; EPLANET, ERC, ERDF, FP7, Horizon 2020 and Marie Skłodowska-Curie Actions, European Union; Investissements d’Avenir Labex and Idex, ANR, Région Auvergne and Fondation Partager le Savoir, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF; BSF, GIF and Minerva, Israel; BRF, Norway; CERCA Programme Generalitat de Catalunya, Generalitat Valenciana, Spain; the Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), RAL (UK) and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [74].en_US
dc.identifier.citationAaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; … & Zwalinski, L. (2017). Measurements of top-quark pair differential cross-sections in the eμ channel in pp collisions at √s=13TeV using the ATLAS detector. The European Physical Journal C, 77(5), article 292. DOI: 10.1140/epjc/s10052- 017-4821-xen_US
dc.identifier.urihttps://doi.org/10.1140/epjc/s10052-017-4821-x
dc.identifier.urihttp://hdl.handle.net/1828/11562
dc.language.isoenen_US
dc.publisherThe European Physical Journal Cen_US
dc.subject.departmentDepartment of Physics and Astronomy
dc.titleMeasurements of top-quark pair differential cross-sections in the eμ channel in pp collisions at √s=13TeV using the ATLAS detectoren_US
dc.typeArticleen_US

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