PoS - Proceedings of Science
Volume 398 - The European Physical Society Conference on High Energy Physics (EPS-HEP2021) - T05: Heavy Ion Physics
Measurement of light-by-light scattering in ultra-peripheral Pb+Pb collisions with the ATLAS detector
M. Dyndal
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Pre-published on: January 13, 2022
Published on:
Abstract
In ultra-relativistic heavy-ion collisions, one expects copious rates of $\gamma\gamma$ processes through the interaction of the large electromagnetic fields of the nuclei which can lead to light-by-light scattering via loop diagrams. This process was directly observed for the first time at the LHC by ATLAS. Final measurements of light-by-light scattering with the full Run 2 dataset with substantially reduced uncertainties are presented. This process provides a precise and unique opportunity to investigate extensions of the Standard Model such as axion-like particles.
DOI: https://doi.org/10.22323/1.398.0322
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