Search for pair production of third-generation scalar leptoquarks and top squarks in proton-proton collisions at v ?s=8 TeV

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dc.authoridTuominiemi, Jorma/0000-0003-0386-8633
dc.authoridUmer, Tariq/0000-0002-3333-8142
dc.authoridRobert, Schoefbeck/0000-0002-2332-8784
dc.authoridSguazzoni, Giacomo/0000-0002-0791-3350
dc.authoridTinoco Mendes, Andre David/0000-0001-5854-7699
dc.authoridColafranceschi, Stefano/0000-0002-7335-6417
dc.authoridDogra, Sunil Manohar/0000-0002-0812-0758
dc.contributor.authorKhachatryan, V.
dc.contributor.authorSirunyan, A. M.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorBergauer, T.
dc.contributor.authorDragicevic, M.
dc.contributor.authorThe CMS Collaboration
dc.date.accessioned2025-03-07T20:17:58Z
dc.date.available2025-03-07T20:17:58Z
dc.date.issued2014
dc.departmentÇağ Üniversitesi
dc.description.abstractA search for pair production of third-generation scalar leptoquarks and supersymmetric top quark partners, top squarks, in final states involving tau leptons and bottom quarks is presented. The search uses events from a data sample of proton-proton collisions corresponding to an integrated luminosity of 19.7 fb(-1), collected with the CMS detector at the LHC with root s = 8 TeV. The number of observed events is found to be in agreement with the expected standard model background. Third-generation scalar leptoquarks with masses below 740 GeV are excluded at 95% confidence level, assuming a 100% branching fraction for the leptoquark decay to a tau lepton and a bottom quark. In addition, this mass limit applies directly to top squarks decaying via an R-parity violating coupling. lambda(') (333). The search also considers a similar signature from top squarks undergoing a chargino-mediated decay involving the Rparity violating coupling. lambda(')(3jk). Each top squark decays to a tau lepton, a bottom quark, and two light quarks. Top squarks in this model with masses below 580 GeV are excluded at 95% confidence level. The constraint on the leptoquark mass is the most stringent to date, and this is the first search for top squarks decaying via. lambda(')(3jk). (C) 2014 The Authors. Published by Elsevier B. V.
dc.description.sponsorshipSTFC [ST/L006340/1, ST/I505572/1, ST/K003844/1, ST/H00081X/2, ST/J004901/1, ST/F007094/1, ST/J005665/1, ST/I005912/1, ST/L00609X/1] Funding Source: UKRI; Direct For Mathematical & Physical Scien; Division Of Physics [1206044, 1120138, 0906479, 1211067] Funding Source: National Science Foundation; Direct For Mathematical & Physical Scien; Division Of Physics [1314131, 1306951, 1205960, 1151640] Funding Source: National Science Foundation
dc.identifier.doi10.1016/j.physletb.2014.10.063
dc.identifier.endpage249
dc.identifier.issn0370-2693
dc.identifier.issn1873-2445
dc.identifier.scopus2-s2.0-85037556480
dc.identifier.scopusqualityQ1
dc.identifier.startpage229
dc.identifier.urihttps://doi.org/10.1016/j.physletb.2014.10.063
dc.identifier.urihttps://hdl.handle.net/20.500.12507/3112
dc.identifier.volume739
dc.identifier.wosWOS:000346002000036
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofPhysics Letters B
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20241226
dc.subjectCMS
dc.subjectPhysics
dc.subjectLeptoquark
dc.subjectTop squark
dc.titleSearch for pair production of third-generation scalar leptoquarks and top squarks in proton-proton collisions at v ?s=8 TeV
dc.typeArticle

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