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- W4385890276 abstract "A search is presented for a third-generation leptoquark (LQ) coupled exclusively to a $tau$ lepton and a b quark. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV recorded with the CMS detector, corresponding to an integrated luminosity of 138 fb$^{-1}$. Events with $tau$ 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 2 TeV and an LQ-b-$tau$ 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 0.5-2.3 TeV, and up to 3 TeV for $t$-channel LQ exchange. Leptoquarks are excluded below masses of 1.22-1.88 TeV for different LQ models and varying coupling strengths up to 2.5. The study of nonresonant $tautau$ production through $t$-channel LQ exchange allows lower limits on the LQ mass of up to 2.3 TeV to be obtained." @default.
- W4385890276 created "2023-08-17" @default.
- W4385890276 creator A5041811596 @default.
- W4385890276 date "2023-08-15" @default.
- W4385890276 modified "2023-09-27" @default.
- W4385890276 title "Search for a third-generation leptoquark coupled to a $tau$ lepton and a b quark through single, pair, and nonresonant production in proton-proton collisions at $sqrt{s}$ = 13 TeV" @default.
- W4385890276 doi "https://doi.org/10.48550/arxiv.2308.07826" @default.
- W4385890276 hasPublicationYear "2023" @default.
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