Search for massive long-lived particles decaying semileptonically in the LHCb detector
Author(s)
LHCB Collaboration; Boettcher, Thomas Julian; Ilten, Philip J; Williams, Michael
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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 2fb⁻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/c² and lifetimes from 5 to 100ps 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/c² 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. Keywords:
Minimal Supersymmetric Standard Model; Systematic Uncertainty; Detection Efficiency; Gluino Mass; Fast Simulation
Date issued
2017-04Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
European Physical Journal C: Particles and Fields
Publisher
Springer Berlin Heidelberg
Citation
Aaij, R. et al. “Search for Massive Long-Lived Particles Decaying Semileptonically in the LHCb Detector.” The European Physical Journal C 77, 4 (April 2017): 224 © 2017 The Author(s)
Version: Final published version
ISSN
1434-6044
1434-6052