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Search for top squarks in final states with many light-flavor jets and 0, 1, or 2 charged leptons in proton-proton collisions at $\sqrt{s}=13$ TeV

CMS Collaboration; Chekhovsky, V.; Hayrapetyan, A.; Makarenko, Vladimir; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Benato, Lisa; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Li, A.; Liko, D.; Mikulec, I.; Schieck, J.; ... mehr

Abstract:

Several new physics models including versions of supersymmetry (SUSY) characterized by -parity violation (RPV) or with additional hidden sectors predict the production of events with top quarks, low missing transverse momentum, and many additional quarks or gluons. The results of a search for top squarks decaying to two top quarks and six additional light-flavor quarks or gluons are reported. The search employs a novel machine learning method for background estimation from control samples in data using decorrelated discriminators. The search is performed using events with 0, 1, or 2 electrons or muons in conjunction with at least six jets. No requirement is placed on the magnitude of the missing transverse momentum. The result is based on a sample of proton-proton collisions at $\sqrt{s}=13$ TeV corresponding to 138 fb$^{-1}$ of integrated luminosity collected with the CMS detector at the LHC in 2016 2018. The data are used to determine upper limits on the top squark pair production cross section in the frameworks of RPV and stealth SUSY. Models with top squark masses less than 700 (930) GeV are excluded at 95% confidence level for RPV (stealth) SUSY scenarios.


Volltext §
DOI: 10.5445/IR/1000188375
Veröffentlicht am 10.12.2025
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Astroteilchenphysik (IAP)
Institut für Experimentelle Teilchenphysik (ETP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Scientific Computing Center (SCC)
Publikationstyp Forschungsbericht/Preprint
Publikationsdatum 05.11.2025
Sprache Englisch
Identifikator ISSN: 1029-8479
KITopen-ID: 1000188375
Verlag arxiv
Serie High Energy Physics - Experiment
Vorab online veröffentlicht am 10.06.2025
Nachgewiesen in OpenAlex
arXiv
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