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Title
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Search for long-lived particles decaying into displaced jets in proton-proton collisions at =13 TeV
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Author
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Institution/Organisation
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CMS Collaboration
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Abstract
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| A search for long-lived particles decaying into jets is presented. Data were collected with the CMS detector at the LHC from proton-proton collisions at a center-of-mass energy of 13 TeV in 2016, corresponding to an integrated luminosity of 35.9 fb(-1). The search examines the distinctive topology of displaced tracks and secondary vertices. The selected events are found to be consistent with standard model predictions. For a simplified model in which long-lived neutral particles are pair produced and decay to two jets, pair production cross sections larger than 0.2 fb are excluded at 95% confidence level for a long-lived particle mass larger than 1000 GeV and proper decay lengths between 3 and 130 mm. Several supersymmetry models with gauge-mediated supersymmetry breaking or R-parity violation, where pair-produced long-lived gluinos or top squarks decay to several final-state topologies containing displaced jets, are also tested. For these models, in the mass ranges above 200 GeV, gluino masses up to 2300-2400 GeV and top squark masses up to 1350-1600 GeV are excluded for proper decay lengths approximately between 10 and 100 mm. These are the most restrictive limits to date on these models. |
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Language
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English
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Source (journal)
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PHYSICAL REVIEW D
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Publication
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2019
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DOI
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10.1103/PHYSREVD.99.032011
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Volume/pages
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99
:3
(2019)
, 28 p.
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Article Reference
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032011
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ISI
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000459324100001
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (open access)
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