Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/18033
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dc.contributor.authorSirunyan, AM-
dc.contributor.authorTumasyan, A-
dc.contributor.authorAdam, W-
dc.contributor.authorAmbrogi, F-
dc.contributor.authorAsilar, E-
dc.contributor.authorBergauer, T-
dc.contributor.authorBrandstetter, J-
dc.contributor.authorDragicevic, M-
dc.contributor.authorErö, J-
dc.contributor.authorEscalante Del Valle, A-
dc.contributor.authorFlechl, M-
dc.contributor.authorFrühwirth, R-
dc.contributor.authorGhete, VM-
dc.contributor.authorHrubec, J-
dc.contributor.authorJeitler, M-
dc.contributor.authorKrammer, N-
dc.contributor.authorKrätschmer, I-
dc.contributor.authorLiko, D-
dc.contributor.authorMadlener, T-
dc.contributor.authorMikulec, I-
dc.contributor.authorRad, N-
dc.contributor.authorRohringer, H-
dc.contributor.authorSchieck, J-
dc.contributor.authorSchöfbeck, R-
dc.contributor.authorSpanring, M-
dc.contributor.authorSpitzbart, D-
dc.contributor.authorTaurok, A-
dc.contributor.authorWaltenberger, W-
dc.contributor.authorWittmann, J-
dc.contributor.authorWulz, CE-
dc.contributor.authorZarucki, M-
dc.contributor.authorChekhovsky, V-
dc.contributor.authorMossolov, V-
dc.contributor.authorSuarez Gonzalez, J-
dc.contributor.authorDe Wolf, EA-
dc.contributor.authorDi Croce, D-
dc.contributor.authorJanssen, X-
dc.contributor.authorLauwers, J-
dc.contributor.authorPieters, M-
dc.contributor.authorVan Haevermaet, H-
dc.contributor.authorVan Mechelen, P-
dc.contributor.authorVan Remortel, N-
dc.contributor.authorAbu Zeid, S-
dc.contributor.authorBlekman, F-
dc.contributor.authorD'Hondt, J-
dc.contributor.authorDe Bruyn, I-
dc.contributor.authorDe Clercq, J-
dc.contributor.authorDeroover, K-
dc.contributor.authorFlouris, G-
dc.contributor.authorLontkovskyi, D-
dc.contributor.authorLowette, S-
dc.contributor.authorMarchesini, I-
dc.contributor.authorMoortgat, S-
dc.contributor.authorMoreels, L-
dc.contributor.authorPython, Q-
dc.contributor.authorSkovpen, K-
dc.contributor.authorTavernier, S-
dc.contributor.authorVan Doninck, W-
dc.contributor.authorVan Mulders, P-
dc.contributor.authorVan Parijs, I-
dc.contributor.authorBeghin, D-
dc.contributor.authorBilin, B-
dc.contributor.authorBrun, H-
dc.contributor.authorClerbaux, B-
dc.contributor.authorDe Lentdecker, G-
dc.contributor.authorDelannoy, H-
dc.contributor.authorDorney, B-
dc.contributor.authorFasanella, G-
dc.contributor.authorFavart, L-
dc.contributor.authorGoldouzian, R-
dc.contributor.authorGrebenyuk, A-
dc.contributor.authorKalsi, AK-
dc.contributor.authorLenzi, T-
dc.contributor.authorLuetic, J-
dc.contributor.authorPostiau, N-
dc.contributor.authorStarling, E-
dc.contributor.authorThomas, L-
dc.contributor.authorVander Velde, C-
dc.contributor.authorVanlaer, P-
dc.contributor.authorVannerom, D-
dc.contributor.authorWang, Q-
dc.contributor.authorCornelis, T-
dc.contributor.authorDobur, D-
dc.contributor.authorFagot, A-
dc.contributor.authorGul, M-
dc.contributor.authorKhvastunov, I-
dc.contributor.authorPoyraz, D-
dc.contributor.authorRoskas, C-
dc.contributor.authorTrocino, D-
dc.contributor.authorTytgat, M-
dc.contributor.authorVerbeke, W-
dc.contributor.authorVermassen, B-
dc.contributor.authorVit, M-
dc.contributor.authorZaganidis, N-
dc.contributor.authorBakhshiansohi, H-
dc.contributor.authorBondu, O-
dc.contributor.authorBrochet, S-
dc.contributor.authorBruno, G-
dc.contributor.authorCaputo, C-
dc.contributor.authorDavid, P-
dc.date.accessioned2019-05-09T12:58:20Z-
dc.date.available2019-05-10-
dc.date.available2019-05-09T12:58:20Z-
dc.date.issued2019-03-29-
dc.identifier.citationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2019, 792 pp. 345 - 368en_US
dc.identifier.issn0370-2693-
dc.identifier.issnhttp://dx.doi.org/10.1016/j.physletb.2019.01.072-
dc.identifier.urihttp://bura.brunel.ac.uk/handle/2438/18033-
dc.description.abstractA search for a narrow Z' gauge boson with a mass between 5 and 70 GeV resulting from an Lμ − Lτ U(1) local gauge symmetry is reported. Theories that predict such a particle have been proposed as an explanation of various experimental discrepancies, including the lack of a dark matter signal in direct detection experiments, tension in the measurement of the anomalous magnetic moment of the muon, and reports of possible lepton flavor universality violation in B meson decays. A data sample of proton proton collisions at a center-of-mass energy of 13 TeV is used, corresponding to an integrated luminosity of 77.3 fb−1 recorded in 2016 and 2017 by the CMS detector at the LHC. Events containing four muons with an invariant mass near the standard model Z boson mass are analyzed, and the selection is further optimized to be sensitive to the events that may contain Z → Z' μμ → 4μ decays. The event yields are consistent with the standard model predictions. Upper limits of 10−8–10−7 at 95% confidence level are set on the product of branching fractions B(Z → Z' μμ)B(Z' → μμ), depending on the Z' mass, which excludes a Z' boson coupling strength to muons above 0.004–0.3. These are the first dedicated limits on Lμ − Lτ models at the LHC and result in a significant increase in the excluded model parameter space. The results of this search may also be used to constrain the coupling strength of any light Z' gauge boson to muons.en_US
dc.description.sponsorshipSTFC (United Kingdom); Marie-Curie program; The European Research Council; Horizon 2020 Granten_US
dc.format.extent345 - 368-
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.subjectCMSen_US
dc.subjectPhysicsen_US
dc.subjectZprimeen_US
dc.subjectMuonsen_US
dc.titleSearch for an L <inf>μ</inf>  − L <inf>τ</inf> gauge boson using Z → 4μ events in proton-proton collisions at s=13 TeVen_US
dc.typeArticleen_US
dc.identifier.doihttp://dx.doi.org/10.1016/j.physletb.2019.01.072-
dc.relation.isPartOfPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics-
pubs.publication-statusAccepted-
pubs.volume792-
Appears in Collections:Dept of Electronic and Computer Engineering Research Papers

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