PoS - Proceedings of Science
Volume 449 - The European Physical Society Conference on High Energy Physics (EPS-HEP2023) - T09 Higgs Physics
Search for low and high mass resonances with yy/Zy final states with the ATLAS detector
L. Pascual Dominguez
Full text: pdf
Pre-published on: February 13, 2024
Published on: March 21, 2024
Searches for new resonances decaying to two photons and a Z boson and a photon in the ATLAS experiment at the LHC are presented. The analyses are based on $pp$ collision data corresponding to an integrated luminosity of 139 fb$^{-1}$ at $\sqrt{s}$ = 13 TeV recorded between 2015 and 2018. Three independent searches are performed: a boosted resonance search in the diphoton final state probing masses between 10 and 70 GeV, a diphoton resonance search from 70 to 110 GeV, and a resonance search in the $Z\gamma$ final state covering masses between 220 GeV up to 3.4 TeV.
No significant deviations with respect to the Standard Model are observed and upper limits on their production cross-section times branching ratio are provided.
DOI: https://doi.org/10.22323/1.449.0389
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