Measurement of the mass difference between top and anti-top quarks in pp collisions at √s = 7 TeV using the ATLAS detector

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Show simple item record ATLAS collaboration Aad, G. Arnal, V. Barreiro, Fernando Cantero, J. De la Torre, H. Del Peso, J. Glasman, C. Llorente Merino, J. Labarga, Luis Terrón, J.
dc.contributor.other UAM. Departamento de Física Teórica es_ES 2016-03-10T17:44:17Z 2016-03-10T17:44:17Z 2014-01-01
dc.identifier.citation Physics Letters B 728.1 (2014) 363-379 en_US
dc.identifier.issn 1873-2445 (online) es_ES
dc.identifier.issn 0370-2693 (print) es_ES
dc.description Artículo escrito por muchos autores, sólo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración y los autores que firman como pertenecientes a la UAM en_US
dc.description.abstract A measurement of the mass difference between top and anti-top quarks is presented. In a 4.7 fb−1 data sample of proton–proton collisions at √ s = 7 TeV recorded with the ATLAS detector at the LHC, events consistent with tt production and decay into a single charged lepton final state are reconstructed. For each event, the mass difference between the top and anti-top quark candidate is calculated. A two b-tag requirement is used in order to reduce the background contribution. A maximum likelihood fit to these per-event mass differences yields Δm ≡ mt − mt = 0.67 ± 0.61 (stat) ± 0.41 (syst) GeV, consistent with CPT invariance en_US
dc.description.sponsorship We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWF 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, DNSRC and Lundbeck Foundation, Denmark; EPLANET, ERC and NSRF, European Union; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, DFG, HGF, MPG and AvH Foundation, Germany; GSRT and NSRF, Greece; ISF, MINERVA, GIF, DIP and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; BRF and RCN, Norway; MNiSW, Poland; GRICES and FCT, Portugal; MNE/IFA, Romania; MES of Russia and ROSATOM, Russian Federation; JINR; MSTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SER, SNSF and Cantons of Bern and Geneva, Switzerland; NSC, Taiwan; TAEK, Turkey; STFC, the Royal Society and Leverhulme Trust, United Kingdom; DOE and NSF, United States of America. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN and 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) and in the Tier-2 facilities worldwide en_US
dc.format.extent 17 pág. es_ES
dc.format.mimetype application/pdf en
dc.language.iso eng en
dc.publisher Elsevier en_US
dc.relation.ispartof Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics en_US
dc.rights © 2013 The Authors en_US
dc.title Measurement of the mass difference between top and anti-top quarks in pp collisions at √s = 7 TeV using the ATLAS detector en_US
dc.type article en
dc.subject.eciencia Física es_ES
dc.relation.publisherversion es_ES
dc.identifier.doi 10.1016/j.physletb.2013.12.010 es_ES
dc.identifier.publicationfirstpage 363 es_ES
dc.identifier.publicationissue 1 es_ES
dc.identifier.publicationlastpage 379 es_ES
dc.identifier.publicationvolume 728 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/246806 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion en Reconocimiento es_ES
dc.rights.accessRights openAccess en
dc.authorUAM Labarga Echeverría, Luis Alfonso (259926)
dc.authorUAM Barreiro Alonso, Fernando (259561)

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