Search for light long-lived particles decaying to displaced jets in proton–proton collisions at ; ; ; ; s; ; =; 13.6; ; TeV; ; Journal Article uri icon

Overview

abstract

  • 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 fb−1, 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.

publication date

  • March 1, 2025

Date in CU Experts

  • February 18, 2025 4:40 AM

Full Author List

  • Collaboration TCMS

author count

  • 1

Other Profiles

International Standard Serial Number (ISSN)

  • 0034-4885

Electronic International Standard Serial Number (EISSN)

  • 1361-6633

Additional Document Info

start page

  • 037801

end page

  • 037801

volume

  • 88

issue

  • 3