Yetkin, Elif Aslı2022-10-272022-10-272022-041434-6044https://hdl.handle.net/11411/4620https://doi.org/10.1140/epjc/s10052-022-10127-0Abstract: A search for low-mass dilepton resonances in Higgs boson decays is conducted in the four-lepton final state. The decay is assumed to proceed via a pair of beyond the standard model particles, or one such particle and a Z boson. The search uses proton–proton collision data collected with the CMS detector at the CERN LHC, corresponding to an integrated luminosity of 137fb-1, at a center-of-mass energy s=13TeV. No significant deviation from the standard model expectation is observed. Upper limits at 95% confidence level are set on model-independent Higgs boson decay branching fractions. Additionally, limits on dark photon and axion-like particle production, based on two specific models, are reported. © 2022, The Author(s).eninfo:eu-repo/semantics/openAccessArticle2-s2.0-8512825950610.1140/epjc/s10052-022-10127-035467301Q1WOS:000780957800008