CERN Accelerating science

ATLAS Slides
Report number	ATL-PHYS-SLIDE-2024-623
Title	Rare and exotic Higgs decays in ATLAS
Author(s)	Boye, Diallo (Brookhaven National Laboratory (US))
Corporate author(s)	The ATLAS collaboration
Collaboration	ATLAS Collaboration
Submitted by	[email protected] on 06 Dec 2024
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Free keywords	Axions Like Particles ; Dark matter ; Dark photon ; pseudo-scalar ; Higgs ; HDBS ; HIGGS ; EXOTICS
Abstract	The discovery of the Higgs boson in 2012 marked a major milestone in particle physics, completing the Standard Model (SM). However, rare and exotic decays of the Higgs boson offer unique opportunities to explore physics beyond the Standard Model (BSM). These decays, characterized by suppressed branching ratios in the SM or unconventional final states, provide powerful probes of new phenomena such as dark matter candidate, hidden sectors, and additional symmetries. This presentation highlights recent ATLAS results on rare Higgs decays, including as well as searches for exotic decay modes, such as decays to long-lived particles or dark sector states. We will discuss the experimental challenges in identifying these signatures, the innovative techniques employed to enhance sensitivity, and the constraints placed on BSM models.