Search for massive long-lived particles decaying semileptonically in the LHCb detector
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Aaij2017_Article_SearchForMassiveLong-livedPart.pdf
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1.17 MB
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Author(s)
LHCB Collaboration
Boettcher, Thomas Julian
Ilten, Philip J
Williams, Michael
Date Issued
April 2017
Journal
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
Abstract
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
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1140/epjc/s10052-017-4744-6
