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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/186423
Search for massive long-lived particles decaying semileptonically in the LHCb detector
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A search is presented for massive long-lived particles decaying into a muon and two quarks. The dataset consists of proton-proton interactions at centre-of-mass energies of 7 and 8 TeV, corresponding to integrated luminosities of 1 and 2 fb^{-1}, respectively. The analysis is performed assuming a set of production mechanisms with simple topologies, including the production of a Higgs-like particle decaying into two long-lived particles. The mass range from 20 to 80 {GeV}/c^2 and lifetimes from 5 to 100{ {ps}} are explored. Results are also interpreted in terms of neutralino production in different R-Parity violating supersymmetric models, with masses in the 23-198 GeV/c^2 range. No excess above the background expectation is observed and upper limits are set on the production cross-section for various points in the parameter space of theoretical models.
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CAMBONI, Alessandro, et al. Search for massive long-lived particles decaying semileptonically in the LHCb detector. European Physical Journal C. 2017. Vol. 77, num. 224, pags. 1-16. ISSN 1434-6044. [consulted: 11 of October of 2026]. Available at: https://hdl.handle.net/2445/186423