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

Summary, in English

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

• Author: G. Aad; T.P.A. Åkesson; C. Doglioni; P.A. Ekman; V. Hedberg; H. Herde; B. Konya; E. Lytken; R. Poettgen; N.D. Simpson; O. Smirnova; L. Zwalinski
• Department/s: Particle and nuclear physics; eSSENCE: The e-Science Collaboration; Department of Physics
• Publishing year: 2024
• Language: English
• Publication/Series: European Physical Journal C
• Volume: 84
• Issue: 7
• Links: http://dx.doi.org/10.1140/epjc/s10052-024-12979-0
• Document type: Journal article
• Publisher: Springer Nature
• Topic: Subatomic Physics
• Keywords: Bosons; Tellurium compounds; Vanadium compounds; A-center; ATLAS experiment; Center-of-mass energies; Centre-of-mass energies; Data set; Higgs Boson decay; Particle mass; Proton proton collisions; The standard model; Two photon; Photons
• Status: Published
• ISBN/ISSN/Other: ISSN: 1434-6044