Measurement of the top-quark mass in tt + 1-jet events collected with the ATLAS detector in pp collisions at √ s = 8 TeV

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dc.contributor.authorAad, G.
dc.contributor.authorAbbott, B.
dc.contributor.authorAbbott, D.C.
dc.contributor.authorAbdinov, O.
dc.contributor.authorAbed Abud, A.
dc.contributor.authorAbeling, K.
dc.contributor.authorAbhayasinghe, D.K.
dc.contributor.authorAbidi, S.H.
dc.contributor.authorAbouZeid, O.S
dc.contributor.authorAbraham, N.L.
dc.contributor.authorAlbert, Justin
dc.contributor.authorAnelli, Christopher R.
dc.contributor.authorChiu, Y. H.
dc.contributor.authorGhasemi Bostanabad, M.
dc.contributor.authorHamano, Kenji
dc.contributor.authorHill, Ewan Chin
dc.contributor.authorKay, E. F.
dc.contributor.authorKeeler, Richard
dc.contributor.authorKowalewski, Robert
dc.contributor.authorLefebvre, Michel
dc.contributor.authoret al.
dc.date.accessioned2020-10-19T21:23:52Z
dc.date.available2020-10-19T21:23:52Z
dc.date.copyright2019en_US
dc.date.issued2019
dc.description.abstractA determination of the top-quark mass is presented using 20.2 fb−1 of 8 TeV TeV proton-proton collision data produced by the Large Hadron Collider and collected by the ATLAS experiment. The normalised di erential cross section of top-quark pair production in association with an energetic jet is measured in the lepton+jets nal state and unfolded to parton and particle levels. The unfolded distribution at parton level can be described using next-to-leading-order QCD predictions in terms of either the top-quark pole mass or the running mass as de ned in the (modi ed) minimal subtraction scheme. A comparison between the experimental distribution and the theoretical prediction allows the top-quark mass to be extracted in the two schemes. The value obtained for the pole-mass scheme is: mpole t = 171:1 0:4 (stat) 0:9 (syst) +0:7 -0:3 (theo) GeV: The extracted value in the running-mass scheme is: mt(mt) = 162:9 0:5 (stat) 1:0 (syst) +2:1 -1:2 (theo) GeV: The results for the top-quark mass using the two schemes are consistent, when translated from one scheme to the other.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 sta from our institutions without whom ATLAS could not be operated e ciently. 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-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF 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 MIZ S, 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, CANARIE, CRC and Compute Canada, Canada; COST, ERC, ERDF, Horizon 2020, and Marie Sk lodowska-Curie Actions, European Union; Investissements d' Avenir Labex and Idex, ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co- nanced by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; CERCA Programme Generalitat de Catalunya, 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 (U.K.) and BNL (U.S.A.), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in ref.en_US
dc.identifier.citationAad, G., Abbott, B., Abbott, D.C., Abdinov, O., Abed Abud, A., Abeling, K., … Zwalinski, L (2019). Measurement of the top-quark mass in tt + 1-jet events collected with the ATLAS detector in pp collisions at √s = 8 TeV. Journal of High Energy Physics, 2019(11) https://doi.org/10.1007/JHEP11(2019)150en_US
dc.identifier.urihttps://doi.org/10.1007/JHEP11(2019)150
dc.identifier.urihttp://hdl.handle.net/1828/12213
dc.language.isoenen_US
dc.publisherJournal of High Energy Physicsen_US
dc.subjectHadron-Hadron scattering (experiments), Top physics
dc.subject.departmentDepartment of Physics and Astronomy
dc.titleMeasurement of the top-quark mass in tt + 1-jet events collected with the ATLAS detector in pp collisions at √ s = 8 TeVen_US
dc.typeArticleen_US

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