Compact Muon Solenoid
LHC, CERN
Visit us: CMS Public Website, CMS Physics ;
Contact us: CMS Publications Committee
| CMS-PAS-EXO-21-014 | ||
| Search for long-lived particles in pp collision events with delayed trackless jets at $ \sqrt{s} = $ 13 TeV | ||
| CMS Collaboration | ||
| 31 October 2022 | ||
| Abstract: A search for long-lived particles decaying in the outer regions of the CMS silicon tracker or in the calorimeters is presented. The data sample consists of 138 fb$ ^{-1} $ of proton-proton collisions at $ \sqrt{s} = $ 13 TeV, recorded at the LHC in 2016--2018. A novel technique, using trackless and delayed jet information combined in a deep neural network discriminator, is employed to identify decays of long-lived particles. The results are interpreted in a simplified model of chargino-neutralino production, where the neutralino is the next-to-lightest supersymmetric particle, is long-lived, and decays to a gravitino and either a Higgs or Z boson. This search is most sensitive to neutralino proper decay lengths of $ \approx $1 $ \mathrm{m} $, for which neutralino masses from up to 1180 GeV are excluded at 95% confidence level. | ||
|
Links:
CDS record (PDF) ;
CADI line (restricted) ;
These preliminary results are superseded in this paper, Submitted to JHEP. The superseded preliminary plots can be found here. |
||
|
|
Compact Muon Solenoid LHC, CERN |
|
|
|
|
|
|