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Search for short- and long-lived axion-like particles in H → a a → 4 γ decays with the ATLAS experiment at the LHC

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Article number742
<mark>Journal publication date</mark>26/07/2024
<mark>Journal</mark>European Physical Journal C: Particles and Fields
Issue number7
Volume84
Publication StatusPublished
<mark>Original language</mark>English

Abstract

Presented is the search for anomalous Higgs boson decays into two axion-like particles (ALPs) using the full Run 2 data set of 140fb-1 of proton-proton collisions at a centre-of-mass energy of 13TeV recorded by the ATLAS experiment. The ALPs are assumed to decay into two photons, providing sensitivity to recently proposed models that could explain the (g-2)μ discrepancy. This analysis covers an ALP mass range from 100 to 62GeV and ALP-photon couplings in the range 10-7TeV-1