Search for massive long-lived particles decaying semileptonically in the LHCb detector.

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[Formula: see text], respectively. The analysis is performed as...

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Bibliographic Details
Main Authors: Aaij, R, Adeva, B, Adinolfi, M, Evans, T, Gandini, P, Gruberg Cazon, B, Hadavizadeh, T, Harnew, N, Hill, D, Jalocha, P, John, M, Jurik, N, Malde, S, Nandi, A, Rollings, A, Topp-Joergensen, S, Veneziano, G, Wilkinson, G, LHCb Collaboration (756 Others)
Format: Journal article
Language:English
Published: Springer 2017
Description
Summary: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[Formula: see text], 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 [Formula: see text] and lifetimes from 5 to 100[Formula: see text] 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/[Formula: see text] 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.