First constraints on the Lμ− Lτ explanation of the muon g-2 anomaly from NA64-e at CERN

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dc.contributor.authorAndreev, Yu. M.
dc.contributor.authorAntonov A.
dc.contributor.authorBanerjee D.
dc.contributor.authorBanto Oberhauser B.
dc.contributor.authorBernhard J.
dc.contributor.authorBisio P.
dc.contributor.authorCelentano A.
dc.contributor.authorCharitonidis N.
dc.contributor.authorCooke D.
dc.contributor.authorCrivelli P.
dc.contributor.authorDepero E.
dc.contributor.authorDermenev A.V.
dc.contributor.authorDonskov S.V.
dc.contributor.authorDusaev R.R.
dc.contributor.authorEnik T.
dc.contributor.authorFrolov V.N.
dc.contributor.authorGardikiotis A.
dc.contributor.authorGertsenberger S.V.
dc.contributor.authorGirod S.
dc.contributor.authorGninenko S.N.
dc.contributor.authorHösgen M.
dc.contributor.authorKachanov V.A.
dc.contributor.authorKambar Y.
dc.contributor.authorKarneyeu A.E.
dc.contributor.authorKasianova E.A.
dc.contributor.authorKekelidze G.
dc.contributor.authorKetzer B.
dc.contributor.authorKirpichnikov D.V.
dc.contributor.authorKirsanov M.M.
dc.contributor.authorKolosov V.N.
dc.contributor.authorKramarenko V.A.
dc.contributor.authorKravchuk L.V.
dc.contributor.authorKrasnikov N.V.
dc.contributor.authorKuleshov S.V.
dc.contributor.authorLyubovitskij V.E.
dc.contributor.authorLysan V.
dc.contributor.authorMarini A.
dc.contributor.authorMarsicano L.
dc.contributor.authorMatveev V.A.
dc.contributor.authorMena Fredes R.
dc.contributor.authorMena Yanssen R.
dc.contributor.authorMolina Bueno L.
dc.contributor.authorMongillo M.
dc.contributor.authorPeshekhonov D.V.
dc.contributor.authorPolyakov V.A.
dc.contributor.authorRadics B.
dc.contributor.authorSalamatin K.
dc.contributor.authorSamoylenko V.D.
dc.contributor.authorSieber H.
dc.contributor.authorShchukin D.
dc.contributor.authorSoto O.
dc.contributor.authorTikhomirov V.O.
dc.contributor.authorTlisova I.
dc.contributor.authorToropin A.N.
dc.contributor.authorTuzi M.
dc.contributor.authorUlloa P.
dc.contributor.authorVolkov P.V.
dc.contributor.authorVolkov, V. Yu.
dc.contributor.authorVoronchikhin I.V.
dc.contributor.authorZamora-Saá J.
dc.date.accessioned2024-09-24T13:42:26Z
dc.date.available2024-09-24T13:42:26Z
dc.date.issued2024-07
dc.descriptionIndexación: Scopus.
dc.description.abstractThe inclusion of an additional U(1) gauge Lμ − Lτ symmetry would release the tension between the measured and the predicted value of the anomalous muon magnetic moment: this paradigm assumes the existence of a new, light Z′ vector boson, with dominant coupling to μ and τ leptons and interacting with electrons via a loop mechanism. The Lμ − Lτ model can also explain the Dark Matter relic abundance, by assuming that the Z′ boson acts as a “portal” to a new Dark Sector of particles in Nature, not charged under known interactions. In this work we present the results of the Z′ search performed by the NA64-e experiment at CERN SPS, that collected ~ 9 × 1011 100 GeV electrons impinging on an active thick target. Despite the suppressed Z′ production yield with an electron beam, NA64-e provides the first accelerator-based results excluding the g − 2 preferred band of the Z′ parameter space in the 1 keV <mZ′ ≲ 2 MeV range, in complementarity with the limits recently obtained by the NA64-μ experiment with a muon beam.
dc.description.urihttps://www-scopus-com.recursosbiblioteca.unab.cl/record/display.uri?eid=2-s2.0-85199325282&origin=resultslist&sort=plf-f&src=s&sid=de1f38211b558196d137343d8b19e2a6&sot=aff&sdt=cl&cluster=scosubjabbr%2C%22PHYS%22%2Ct%2Bscosubtype%2C%22ar%22%2Ct%2Bscoafid%2C%2260002636%22%2Ct%2Bscofreetoread%2C%22all%22%2Ct&s=AF-ID%2860002636%29+AND+SUBJAREA%28PHYS%29&sl=34&sessionSearchId=de1f38211b558196d137343d8b19e2a6&relpos=37
dc.identifier.citationJournal of High Energy Physics Open Access Volume 2024, Issue 7July 2024 Article number 212
dc.identifier.doi10.1007/JHEP07(2024)212
dc.identifier.issn10298479
dc.identifier.urihttps://repositorio.unab.cl/handle/ria/60442
dc.language.isoen
dc.publisherSpringer Science and Business Media Deutschland GmbH
dc.rights.licenseCC BY 4.0 Attribution 4.0 International
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectBeyond Standard Model
dc.subjectDark Matter
dc.subjectFixed Target Experiments
dc.titleFirst constraints on the Lμ− Lτ explanation of the muon g-2 anomaly from NA64-e at CERN
dc.typeArtículo
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