Search for long-lived particles decaying into displaced jets in proton-proton collisions at s =13 TeV
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...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
American Physical Society
2019
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/71771/ http://irep.iium.edu.my/71771/ http://irep.iium.edu.my/71771/ http://irep.iium.edu.my/71771/1/71771_Search%20for%20long-lived%20particles%20decaying_article.pdf http://irep.iium.edu.my/71771/2/71771_Search%20for%20long-lived%20particles%20decaying_wos.pdf http://irep.iium.edu.my/71771/3/71771_Search%20for%20long-lived%20particles%20decaying_scopus.pdf |
| Summary: | 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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