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Measurement of the tt¯Ztt¯Z and tt¯Wtt¯W production cross sections in multilepton final states using 3.2 fb−1 of pppp collisions at √s = 13 TeV with the ATLAS detector

dc.contributor.authorAaboud, M.es_ES
dc.contributor.authorAguilar Saavedra, Juan Antonio es_ES
dc.contributor.authorAtlas Collaborationes_ES
dc.date.accessioned2017-03-20T11:36:05Z
dc.date.available2017-03-20T11:36:05Z
dc.date.issued2017
dc.identifier.citationAtlas Collaboration. Measurement of the tt¯Ztt¯Z and tt¯Wtt¯W production cross sections in multilepton final states using 3.2 fb−1 of pppp collisions at √s = 13 TeV with the ATLAS detector. The European Physical Journal C, 77: 40 (2017). [http://hdl.handle.net/10481/45376]es_ES
dc.identifier.issn1434-6044
dc.identifier.issn1434-6052
dc.identifier.urihttp://hdl.handle.net/10481/45376
dc.description.abstractA measurement of the tt¯Z and tt¯W production cross sections in final states with either two same-charge muons, or three or four leptons (electrons or muons) is presented. The analysis uses a data sample of proton–proton collisions at s√=13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015, corresponding to a total integrated luminosity of 3.2 fb−1. The inclusive cross sections are extracted using likelihood fits to signal and control regions, resulting in σtt¯Z=0.9±0.3 pb and σtt¯W=1.5±0.8 pb, in agreement with the Standard Model predictions.en_EN
dc.description.sponsorshipWe 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; GNSF, 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; FOM and 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, 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; 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.es_ES
dc.language.isoeng
dc.publisherSpringer International Publishinges_ES
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 License
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/
dc.subjectProton-proton collisionsen_EN
dc.subjectLuminosityen_EN
dc.subjectLarge Hadron Colliders (LHC)en_EN
dc.subjectQuark-antiquark pairsen_EN
dc.subjectBosonsen_EN
dc.subjectLeptonen_EN
dc.subjectHadronen_EN
dc.titleMeasurement of the tt¯Ztt¯Z and tt¯Wtt¯W production cross sections in multilepton final states using 3.2 fb−1 of pppp collisions at √s = 13 TeV with the ATLAS detectoren_EN
dc.typeinfo:eu-repo/semantics/article
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.identifier.doi10.1140/epjc/s10052-016-4574-y


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