Search for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at root s=13 TeV

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dc.authorid0000-0002-2614-5860en_US
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAmbrogi, F.
dc.contributor.authorBergauer, T.
dc.contributor.authorSağır, Sinan
dc.date.accessioned2021-08-25T08:52:29Z
dc.date.available2021-08-25T08:52:29Z
dc.date.issued2021en_US
dc.departmentKMÜ, Sağlık Hizmetleri Meslek Yüksekokulu, Tıbbi Hizmetler ve Teknikler Bölümüen_US
dc.descriptionWOS:000679259200018en_US
dc.description.abstractA search for leptoquarks produced singly and in pairs in proton-proton collisions is presented. We consider the leptoquark (LQ) to be a scalar particle of charge -1/3e coupling to a top quark plus a tau lepton (t tau) or a bottom quark plus a neutrino (b nu), or a vector particle of charge +2/3e, coupling to t nu or b tau. These choices are motivated by models that can explain a series of anomalies observed in the measurement of B meson decays. In this analysis the signatures t tau nu b and t tau nu are probed, using data recorded by the CMS experiment at the CERN LHC at root s = 13 TeV and that correspond to an integrated luminosity of 137 fb(-1). These signatures have not been previously explored in a dedicated search. The data are found to be in agreement with the standard model prediction. Lower limits at 95% confidence level are set on the LQ mass in the range 0.98-1.73 TeV, depending on the LQ spin and its coupling lambda to a lepton and a quark, and assuming equal couplings for the two LQ decay modes considered. These are the most stringent constraints to date on the existence of leptoquarks in this scenario. (C) 2021 The Author(s). Published by Elsevier B.V.en_US
dc.identifier.citationSirunyan, A. M., Tumasyan, A., Adam, W.,Ambrogi, F., Bergauer, T., ...Sağır,S. (2021). Search for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at root s=13 TeV. Physics Letters B. 819.en_US
dc.identifier.issn1873-2445
dc.identifier.scopus2-s2.0-85111238296
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://hdl.handle.net/11492/5205
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2021.136446
dc.identifier.volume819en_US
dc.identifier.wosWOS:000679259200018
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Sceince
dc.indekslendigikaynakScopus
dc.institutionauthorSağır, Sinan
dc.language.isoen
dc.publisherElsevieren_US
dc.relation.journalPhysics Letters Ben_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCMSen_US
dc.subjectSearch For New Physicsen_US
dc.subjectLeptoquarksen_US
dc.titleSearch for singly and pair-produced leptoquarks coupling to third-generation fermions in proton-proton collisions at root s=13 TeVen_US
dc.typeArticle

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