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Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/13615
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dc.contributor.authorKhachatryan, V-
dc.contributor.authorSirunyan, AM-
dc.contributor.authorTumasyan, A-
dc.contributor.authorAdam, W-
dc.contributor.authorAsilar, E-
dc.contributor.authorBergauer, T-
dc.contributor.authorBrandstetter, J-
dc.contributor.authorBrondolin, E-
dc.contributor.authorDragicevic, M-
dc.contributor.authorErö, J-
dc.contributor.authorFlechl, M-
dc.contributor.authorFriedl, M-
dc.contributor.authorFrühwirth, R-
dc.contributor.authorGhete, VM-
dc.contributor.authorHartl, C-
dc.contributor.authorHörmann, N-
dc.contributor.authorHrubec, J-
dc.contributor.authorJeitler, M-
dc.contributor.authorKönig, A-
dc.contributor.authorKrätschmer, I-
dc.contributor.authorLiko, D-
dc.contributor.authorMatsushita, T-
dc.contributor.authorMikulec, I-
dc.contributor.authorRabady, D-
dc.contributor.authorRad, N-
dc.contributor.authorRahbaran, B-
dc.contributor.authorRohringer, H-
dc.contributor.authorSchieck, J-
dc.contributor.authorStrauss, J-
dc.contributor.authorTreberer-Treberspurg, W-
dc.contributor.authorWaltenberger, W-
dc.contributor.authorWulz, CE-
dc.contributor.authorMossolov, V-
dc.contributor.authorShumeiko, N-
dc.contributor.authorSuarez Gonzalez, J-
dc.contributor.authorAlderweireldt, S-
dc.contributor.authorDe Wolf, EA-
dc.contributor.authorJanssen, X-
dc.contributor.authorLauwers, J-
dc.contributor.authorVan De Klundert, M-
dc.contributor.authorVan Haevermaet, H-
dc.contributor.authorVan Mechelen, P-
dc.contributor.authorVan Remortel, N-
dc.contributor.authorVan Spilbeeck, A-
dc.contributor.authorAbu Zeid, S-
dc.contributor.authorBlekman, F-
dc.contributor.authorD'Hondt, J-
dc.contributor.authorDaci, N-
dc.contributor.authorDe Bruyn, I-
dc.contributor.authorDeroover, K-
dc.contributor.authorHeracleous, N-
dc.contributor.authorLowette, S-
dc.contributor.authorMoortgat, S-
dc.contributor.authorMoreels, L-
dc.contributor.authorOlbrechts, A-
dc.contributor.authorPython, Q-
dc.contributor.authorTavernier, S-
dc.contributor.authorVan Doninck, W-
dc.contributor.authorVan Mulders, P-
dc.contributor.authorVan Parijs, I-
dc.contributor.authorBrun, H-
dc.contributor.authorCaillol, C-
dc.contributor.authorClerbaux, B-
dc.contributor.authorDe Lentdecker, G-
dc.contributor.authorDelannoy, H-
dc.contributor.authorFasanella, G-
dc.contributor.authorFavart, L-
dc.contributor.authorGoldouzian, R-
dc.contributor.authorGrebenyuk, A-
dc.contributor.authorKarapostoli, G-
dc.contributor.authorLenzi, T-
dc.contributor.authorLéonard, A-
dc.contributor.authorLuetic, J-
dc.contributor.authorMaerschalk, T-
dc.contributor.authorMarinov, A-
dc.contributor.authorRandle-conde, A-
dc.contributor.authorSeva, T-
dc.contributor.authorVander Velde, C-
dc.contributor.authorVanlaer, P-
dc.contributor.authorYonamine, R-
dc.contributor.authorZenoni, F-
dc.contributor.authorZhang, F-
dc.contributor.authorCimmino, A-
dc.contributor.authorCornelis, T-
dc.contributor.authorDobur, D-
dc.contributor.authorFagot, A-
dc.contributor.authorGarcia, G-
dc.contributor.authorGul, M-
dc.contributor.authorPoyraz, D-
dc.contributor.authorSalva, S-
dc.contributor.authorSchöfbeck, R-
dc.contributor.authorTytgat, M-
dc.contributor.authorVan Driessche, W-
dc.contributor.authorYazgan, E-
dc.contributor.authorZaganidis, N-
dc.contributor.authorBeluffi, C-
dc.contributor.authorBondu, O-
dc.contributor.authorBrochet, S-
dc.contributor.authorBruno, G-
dc.contributor.authorCaudron, A-
dc.date.accessioned2016-12-09T16:00:36Z-
dc.date.available2016-11-10-
dc.date.available2016-12-09T16:00:36Z-
dc.date.issued2016-
dc.identifier.citationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 762: pp. 512 - 534, (2016)en_US
dc.identifier.issn0370-2693-
dc.identifier.urihttp://bura.brunel.ac.uk/handle/2438/13615-
dc.description.abstractThe W boson helicity fractions from top quark decays in tt‾ events are measured using data from proton–proton collisions at a centre-of-mass energy of 8TeV. The data were collected in 2012 with the CMS detector at the LHC, corresponding to an integrated luminosity of 19.8fb−1. Events are reconstructed with either one muon or one electron, along with four jets in the final state, with two of the jets being identified as originating from b quarks. The measured helicity fractions from both channels are combined, yielding F0=0.681±0.012(stat)±0.023(syst), FL=0.323±0.008(stat)±0.014(syst), and FR=−0.004±0.005(stat)±0.014(syst) for the longitudinal, left-, and right-handed components of the helicity, respectively. These measurements of the W boson helicity fractions are the most accurate to date and they agree with the predictions from the standard model.en_US
dc.description.sponsorshipIndividuals have received support from the Marie-Curie pro-gramme and the European Research Council and EPLANET (Euro-pean Union); the Leventis Foundation; the Alfred P. Sloan Founda-tion; the Alexander von Humboldt Foundation; the Belgian Fed-eral Science Policy Office; the Fonds pour la Formation à la Recherche dans l’Industrie et dans l’Agriculture (FRIA-Belgium); the Agentschap voor Innovatie door Wetenschap en Technologie (IWT-Belgium); the Ministry of Education, Youth and Sports (MEYS) of the Czech Republic; the Council of Science and Industrial Re-search, India; the HOMING PLUS programme of the Foundation for Polish Science, cofinanced from European Union, Regional De-velopment Fund; the Mobility Plus programme of the Ministry of Science and Higher Education (Poland); the OPUS programme of the National Science Center (Poland); the Thalis and Aris-teia programmes cofinanced by EU-ESF and the Greek NSRF; the National Priorities Research Program by Qatar National Research Fund; the Programa Clarín-COFUND del Principado de Asturias; the Rachadapisek Sompot Fund for Postdoctoral Fellowship, Chu-lalongkorn University (Thailand); the Chulalongkorn Academic into Its 2nd Century Project Advancement Project (Thailand); and the Welch Foundation, contract C-184en_US
dc.format.extent512 - 534-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectCMSen_US
dc.subjectPhysicsen_US
dc.subjectTopen_US
dc.subjectAnomalous couplingsen_US
dc.subjectHelicityen_US
dc.titleMeasurement of the W boson helicity fractions in the decays of top quark pairs to lepton + jets final states produced in pp collisions at s=8TeVen_US
dc.typeArticleen_US
dc.identifier.doihttp://dx.doi.org/10.1016/j.physletb.2016.10.007-
dc.relation.isPartOfPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics-
pubs.publication-statusPublished-
pubs.volume762-
Appears in Collections:Dept of Electronic and Electrical Engineering Research Papers

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