Search for long-lived particles with displaced vertices in multijet events in proton-proton collisions at s =13 TeV
Results are reported from a search for long-lived particles in proton-proton collisions at ffiffi s p ¼ 13 TeV delivered by the CERN LHC and collected by the CMS experiment. The data sample, which was recorded during 2015 and 2016, corresponds to an integrated luminosity of 38.5 fb−1. This search...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English English English |
| Published: |
American Physical Society
2018
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/69731/ http://irep.iium.edu.my/69731/ http://irep.iium.edu.my/69731/ http://irep.iium.edu.my/69731/1/69731_Search%20for%20long-lived%20particles%20with%20displaced_article.pdf http://irep.iium.edu.my/69731/2/69731_Search%20for%20long-lived%20particles%20with%20displaced_scopus.pdf http://irep.iium.edu.my/69731/13/69731%20Search%20for%20long-lived%20particles%20with%20displaced%20WOS.pdf |
| Summary: | Results are reported from a search for long-lived particles in proton-proton collisions at ffiffi
s p ¼ 13 TeV
delivered by the CERN LHC and collected by the CMS experiment. The data sample, which was
recorded during 2015 and 2016, corresponds to an integrated luminosity of 38.5 fb−1. This search uses
benchmark signal models in which long-lived particles are pair-produced and each decays into two or
more quarks, leading to a signal with multiple jets and two displaced vertices composed of many tracks.
No events with two well-separated high-track-multiplicity vertices are observed. Upper limits are placed
on models of R-parity violating supersymmetry in which the long-lived particles are neutralinos or
gluinos decaying solely into multijet final states or top squarks decaying solely into dijet final states. For
neutralino, gluino, or top squark masses between 800 and 2600 GeV and mean proper decay lengths
between 1 and 40 mm, the analysis excludes cross sections above 0.3 fb at 95% confidence level. Gluino
and top squark masses are excluded below 2200 and 1400 GeV, respectively, for mean proper decay
lengths between 0.6 and 80 mm. A method is provided for extending the results to other models with
pair-produced long-lived particles. |
|---|