CERN Accelerating science

ATLAS Slides
Report number	ATL-PHYS-SLIDE-2025-415
Title	Search for Beyond Standard Model Higgs boson decays
Author(s)	Zhang, Sijing (Centre National de la Recherche Scientifique (FR))
Corporate author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Submitted to	The 32nd International Symposium on Lepton Photon Interactions at High Energies (Lepton Photon 2025), Madison, Wisconsin, Us, 25 - 29 Aug 2025
Submitted by	sijing.zhang@cern.ch on 30 Aug 2025
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	Higgs, light scalar, ATLAS, LHC ; HIGGS
Abstract	The discovery of the Higgs boson with the mass of approximately 125 GeV completed the particle content predicted by the Standard Model (SM). Even though this model is well established and consistent with many measurements, it is not capable of explaining some observations by itself. Many extensions of the Standard Model addressing such shortcomings introduce beyond-the-Standard-Model couplings to the Higgs boson. In this talk, the latest searches in the Higgs sector (including low mass resonances) are reported, with emphasis on the results obtained with the full LHC Run 2 dataset at 13 TeV and including a series of searches for low-mass resonances in merged or boosted topologies.