Measurement of lepton differential distributions and the top quark mass in t(t)over-bar production in pp collisions at a root s=8TeV with the ATLAS detector

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dc.contributor.author Aaboud, M.
dc.contributor.author Albert, Justin
dc.contributor.author Chiu, Y. H.
dc.contributor.author Elliot, Alison A.
dc.contributor.author Fincke-Keeler, J.
dc.contributor.author Hamano, Kenji
dc.contributor.author Hill, Ewan Chin
dc.contributor.author Keeler, Richard
dc.contributor.author Kowalewski, Robert
dc.contributor.author Kuwertz, E. S.
dc.contributor.author Kwan, Tony
dc.contributor.author LeBlanc, Matthew Edgar
dc.contributor.author Lefebvre, Michel
dc.contributor.author McPherson, Robert A.
dc.contributor.author Seuster, Rolf
dc.contributor.author Sobie, Randall J.
dc.contributor.author Trovatelli, M.
dc.contributor.author Venturi, M.
dc.contributor.author et al.
dc.contributor.author ATLAS Collaboration
dc.date.accessioned 2019-10-24T18:28:40Z
dc.date.available 2019-10-24T18:28:40Z
dc.date.copyright 2017 en_US
dc.date.issued 2017
dc.identifier.citation Aaboud, M.; Aad, G.; Abbott, B.; Abdinov, O.; Abeloos, B.; Abidi, S. H.; … & Zwalinski, L. (2017). Measurement of lepton differential distributions and the top quark mass in t(t)over-bar production in pp collisions at a root s=8TeV with the ATLAS detector. The European Physical Journal C, 77(11), article 804. DOI: 10.1140/epjc/s10052-017-5349-9 en_US
dc.identifier.uri https://doi.org/10.1140/epjc/s10052-017-5349-9
dc.identifier.uri http://hdl.handle.net/1828/11276
dc.description.abstract This paper presents single lepton and dilepton kinematic distributions measured in dileptonic t(t)over-bar events produced in 20.2 fb(-1) of root s = 8 TeV pp collisions recorded by the ATLAS experiment at the LHC. Both absolute and normalised differential cross-sections are measured, using events with an opposite-charge e mu pair and one or two b-tagged jets. The cross-sections are measured in a fiducial region corresponding to the detector acceptance for leptons, and are compared to the predictions from a variety of Monte Carlo event generators, as well as fixed-order QCD calculations, exploring the sensitivity of the cross-sections to the gluon parton distribution function. Some of the distributions are also sensitive to the top quark pole mass; a combined fit of NLO fixed-order predictions to all the measured distributions yields a top quark mass value of m(t)(pole) = 173.2 +/- 0.9 +/- 0.8 +/- 1.2 GeV, where the three uncertainties arise from data statistics, experimental systematics, and theoretical sources. en_US
dc.description.sponsorship We 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 CEI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSEC, 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 MIZS, 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 Sklodowska-Curie Actions, European Union; Investissements d'Avenir Labex and Idex, ANR, Region 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. en_US
dc.language.iso en en_US
dc.publisher The European Physical Journal C en_US
dc.title Measurement of lepton differential distributions and the top quark mass in t(t)over-bar production in pp collisions at a root s=8TeV with the ATLAS detector en_US
dc.type Article en_US
dc.description.scholarlevel Faculty en_US
dc.description.reviewstatus Reviewed en_US

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