Updated search for long-lived particles decaying to jet pairs
A search is presented for long-lived particles with a mass between 25 and 50 GeV/c² 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 a...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Article |
| Published: |
Springer/Società Italiana di Fisica
2018
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| Online Access: | http://hdl.handle.net/1721.1/116870 https://orcid.org/0000-0001-5534-1732 https://orcid.org/0000-0001-8285-3346 |
| Summary: | A search is presented for long-lived particles with a mass between 25 and 50 GeV/c² 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/c² 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. |
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