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Updated search for long-lived particles decaying to jet pairs

MPS-Authors
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Blouw,  J.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Popov,  D.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Schmelling,  M.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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Zavertiaev,  M.
Division Prof. Dr. James A. Hinton, MPI for Nuclear Physics, Max Planck Society;

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1705.07332.pdf
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Citation

LHCb collaboration, Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., et al. (2017). Updated search for long-lived particles decaying to jet pairs. European Physicle Journal C, C77: 812. doi:10.1140/epjc/s10052-017-5178-x.


Cite as: https://hdl.handle.net/21.11116/0000-0005-8711-F
Abstract
A search is presented for long-lived particles with a mass between 25 and 50
GeV/$c^2$ and a lifetime between 2 and 500 ps, using proton-proton collision
data corresponding to an integrated luminosity of 2.0 fb$^{-1}$, collected by
the LHCb detector at centre-of-mass energies of 7 and 8 TeV. The particles are
assumed to be pair-produced in the decay of a 125 GeV/$c^2$ Standard-Model-like
Higgs boson. The experimental signature is a single long-lived particle,
identified by a displaced vertex with two associated jets. No excess above
background is observed and limits are set on the production cross-section as a
function of the mass and lifetime of the long-lived particle.