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dc.contributor.authorKhachatryan, V.
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAsilar, E.
dc.contributor.authorBergauer, T.
dc.contributor.authorÖzdemir, Kadri
dc.contributor.authorCMS Collaboration
dc.date.accessioned2021-06-05T19:57:51Z
dc.date.available2021-06-05T19:57:51Z
dc.date.issued2016
dc.identifier.issn1029-8479
dc.identifier.urihttps://doi.org/10.1007/JHEP03(2016)125
dc.identifier.urihttps://hdl.handle.net/20.500.12960/565
dc.descriptionWOS:000373107900001en_US
dc.description.abstractA search for compositeness of electrons and muons is presented using a data sample of proton-proton collisions at a center-of-mass energy of root s = 8TeV collected with the CMS detector at the LHC and corresponding to an integrated luminosity of 19.7 fb(-1). Excited leptons (l*) produced via contact interactions in conjunction with a standard model lepton are considered, and a search is made for their gauge decay modes. The decays considered are l* -> l gamma and l* -> lZ , which give final states of two leptons and a photon or, depending on the Z-boson decay mode, four leptons or two leptons and two jets. The number of events observed in data is consistent with the standard model prediction. Exclusion limits are set on the excited lepton mass, and the compositeness scale Lambda. For the case M-l* = Lambda the existence of excited electrons (muons) is excluded up to masses of 2.45 (2.47) TeV at 95% confidence level. Neutral current decays of excited leptons are considered for the first time, and limits are extended to include the possibility that the weight factors f and f', which determine the couplings between standard model leptons and excited leptons via gauge mediated interactions, have opposite sign.en_US
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal on High Energy Physicsen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectBeyond Standard Modelen_US
dc.subjectExoticsen_US
dc.subjectHadron-Hadron Scatteringen_US
dc.titleSearch for excited leptons in proton-proton collisions at root s=8 TeVen_US
dc.typearticleen_US
dc.authorid0000-0002-0103-1488
dc.departmentMühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.contributor.institutionauthorÖzdemir, Kadri
dc.identifier.doi10.1007/JHEP03(2016)125
dc.identifier.issue3en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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