Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.11851/8097
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dc.contributor.authorAad, G.-
dc.contributor.authorAbbott, B.-
dc.contributor.authorAbbott, D. C.-
dc.contributor.authorAbud, A. Abed-
dc.contributor.authorAbeling, K.-
dc.contributor.authorAbhayasinghe, D. K.-
dc.contributor.authorSultansoy, Saleh-
dc.contributor.authorThe ATLAS Collaboration-
dc.date.accessioned2022-01-15T12:58:34Z-
dc.date.available2022-01-15T12:58:34Z-
dc.date.issued2021-
dc.identifier.issn1745-2473-
dc.identifier.issn1745-2481-
dc.identifier.urihttps://doi.org/10.1038/s41567-021-01236-w-
dc.identifier.urihttps://hdl.handle.net/20.500.11851/8097-
dc.description.abstractThe standard model of particle physics encapsulates our best current understanding of physics at the smallest scales. A fundamental axiom of this theory is the universality of the couplings of the different generations of leptons to the electroweak gauge bosons. The measurement of the ratio of the decay rate of W bosons to t leptons and muons, R(tau/mu), constitutes an important test of this axiom. Using 139 fb(-1) of proton-proton collisions recorded with the ATLAS detector at a centre-of-mass energy of 13 TeV, we report a measurement of this quantity from di-leptonic tt events where the top quarks decay into a W boson and a bottom quark. We can distinguish muons originating from W bosons and those originating from an intermediate t lepton through the muon transverse impact parameter and differences in the muon transverse momentum spectra. The measured value of R(tau/mu) is 0.992 +/- 0.013 [+/- 0.007(stat) +/- 0.011(syst)] and is in agreement with the hypothesis of universal lepton couplings as postulated in the standard model. This is the only such measurement from the Large Hadron Collider, so far, and obtains twice the precision of previous measurements.en_US
dc.language.isoenen_US
dc.publisherNature Researchen_US
dc.relation.ispartofNature Physicsen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectParton Distributionsen_US
dc.subjectPair Productionen_US
dc.subjectPlus Plusen_US
dc.subjectPhysicsen_US
dc.titleTest of the Universality of Tau and Mu Lepton Couplings in W-Boson Decays With the Atlas Detectoren_US
dc.typeArticleen_US
dc.departmentFaculties, Faculty of Engineering, Department of Material Science and Nanotechnology Engineeringen_US
dc.departmentFakülteler, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümütr_TR
dc.identifier.volume17en_US
dc.identifier.issue7en_US
dc.identifier.startpage813en_US
dc.identifier.endpage+en_US
dc.authoridde Renstrom, Pawel Bruckman / 0000-0002-0206-1160-
dc.identifier.wosWOS:000669764700003en_US
dc.identifier.scopus2-s2.0-85111587526en_US
dc.institutionauthorSultansoy, Saleh-
dc.identifier.doi10.1038/s41567-021-01236-w-
dc.authorwosidde Renstrom, Pawel Bruckman / AAG-7725-2021-
dc.authorwosidCiesla, Krzysztof / AAM-4181-2021-
dc.authorwosidAGHEORGHIESEI, Catalin / B-8596-2014-
dc.authorwosidLlacer, Maria Moreno / AAU-6582-2020-
dc.authorwosidTapia, Sebastian / ABB-6644-2021-
dc.authorwosidIppolito, Valerio / L-1435-2016-
dc.authorwosidMalek, Fairouz / E-4410-2018-
dc.authorscopusid26326745400-
dc.authorscopusid35226946900-
dc.authorscopusid57208306618-
dc.authorscopusid57208907456-
dc.authorscopusid57210132793-
dc.authorscopusid57193183451-
dc.authorscopusid56536227400-
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.scopusqualityQ1-
item.openairetypeArticle-
item.languageiso639-1en-
item.grantfulltextnone-
item.fulltextNo Fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
crisitem.author.dept02.6. Department of Material Science and Nanotechnology Engineering-
Appears in Collections:Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümü / Department of Material Science & Nanotechnology Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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