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

The European Physical Journal. C, Particles and Fields
R AaijLHCb Collaboration

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 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.

References

Apr 1, 1982·Proceedings of the National Academy of Sciences of the United States of America·J J Hopfield
Mar 24, 2017·The European Physical Journal. C, Particles and Fields·V KhachatryanUNKNOWN CMS Collaboration

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Citations

Jun 12, 2019·Reports on Progress in Physics·David CurtinJosé Zurita

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Software Mentioned

Pythia
POWHEG
mSUGRA
Geant4
MSSM

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