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Search for light long-lived particles decaying to displaced jets in proton-proton collisions at √s = 13.6 TeV

Collaboration, The C. M. S. ; Tumasyan, A.; Adam, W.; Andrejkovic, J. W.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; Dragicevic, M.; Hussain, P. S.; Jeitler, M.; Krammer, N.; Li, A.; Liko, D.; Mikulec, I.; Schieck, J.; Schöfbeck, R.; Schwarz, D.; Sonawane, M.; Waltenberger, W.; ... mehr

Abstract:

A search for light long-lived particles (LLPs) decaying to displaced jets is presented, using a
data sample of proton–proton collisions at a center-of-mass energy of 13.6 TeV, corresponding
to an integrated luminosity of 34.7 fb1, collected with the CMS detector at the CERN LHC in
2022. Novel trigger, reconstruction, and machine-learning techniques were developed for and
employed in this search. After all selections, the observations are consistent with the background
predictions. Limits are presented on the branching fraction of the Higgs boson to LLPs that
subsequently decay to quark pairs or tau lepton pairs. An improvement by up to a factor of 10 is
achieved over previous limits for models with LLP masses smaller than 60 GeV and proper
decay lengths smaller than 1 m. The first constraints are placed on the fraternal twin Higgs
(FTH) and folded supersymmetry (FSUSY) models, where the lower bounds on the top quark
partner mass reach up to 350 GeV for the FTH model and 250 GeV for the FSUSY model.

Zugehörige Institution(en) am KIT Institut für Experimentelle Teilchenphysik (ETP)
Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 01.03.2025
Sprache Englisch
Identifikator ISSN: 0034-4885, 1361-6633
KITopen-ID: 1000180317
Erschienen in Reports on Progress in Physics
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 88
Heft 3
Seiten Art.-Nr.: 037801
Vorab online veröffentlicht am 03.02.2025
Nachgewiesen in Scopus
OpenAlex
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Verlagsausgabe §
DOI: 10.5445/IR/1000180317
Veröffentlicht am 25.03.2025
Seitenaufrufe: 6
seit 25.03.2025
Downloads: 2
seit 02.04.2025
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