2026-10-19T00:37:49Zhttps://ebyu-rdlopen.rawdatalibrary.net/oai/request

oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/118082026-10-18T20:26:48Zopenairedrivercom_ebyu_10000col_ebyu_10001

Search for a third-generation leptoquark coupled to a τ lepton and a b quark through single, pair, and nonresonant production in proton-proton collisions at √s = 13TeVHayrapetyan, A.Tumasyan, A.Adam, W.Andrejkovic, J.W.Bergauer, T.Chatterjee, S.Damanakis, K.Dragicevic, M.Escalante Del Valle, A.Hussain, P.S.Jeitler, M.Krammer, N.Liko, D.Mikulec, I.Schieck, J.Schöfbeck, R.Schwarz, D.Sonawane, M.Templ, S.Waltenberger, W.Wulz, C.-E.Darwish, M.R.Janssen, T.Van Mechelen, P.Bols, E.S.D’Hondt, J.Dansana, S.De Moor, A.Delcourt, M.El Faham, H.Lowette, S.Makarenko, I.Müller, D.Sahasransu, A.R.Tavernier, S.Tytgat, M.Van Putte, S.Vannerom, D.Clerbaux, B.De Lentdecker, G.Favart, L.Hohov, D.Jaramillo, J.Khalilzadeh, A.Lee, K.Mahdavikhorrami, M.Malara, A.Paredes, S.Pétré, L.Postiau, N.Beyond Standard ModelHadron-Hadron ScatteringA search is presented for a third-generation leptoquark (LQ) coupled exclusively to a τ lepton and a b quark. The search is based on proton-proton collision data at a center of-mass energy of 13TeV recorded with the CMS detector, corresponding to an integrated luminosity of 138fb−1. Events with τ leptons and a varying number of jets originating from b quarks are considered, targeting the single and pair production of LQs, as well as nonresonant t-channel LQ exchange. An excess is observed in the data with respect to the background expectation in the combined analysis of all search regions. For a benchmark LQ mass of 2TeV and an LQ-b-τ coupling strength of 2.5, the excess reaches a local significance of up to 2.8 standard deviations. Upper limits at the 95% confidence level are placed on the LQ production cross section in the LQ mass range 0.5–2.3TeV, and up to 3TeV for t-channel LQ exchange. Leptoquarks are excluded below masses of 1.22–1.88TeV for different LQ models and varying coupling strengths up to 2.5. The study of nonresonant ττ production through t-channel LQ exchange allows lower limits on the LQ mass of up to 2.3TeV to be obtained. © 2024, Springer Science and Business Media Deutschland GmbH. All rights reserved.Springer Science and Business Media Deutschland GmbH2024Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/11808https://doi.org/10.1007/jhep05(2024)3111029-8479enJournal of High Energy Physicsinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/11808