Light-by-Light Scattering in Ultraperipheral Heavy-ion Collisions — New Possibilities Article Swipe
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· 2025
· Open Access
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· DOI: https://doi.org/10.5506/aphyspolbsupp.18.2-a37
· OA: W4409342151
Light-by-light scattering is a relatively new area of experimental physics. Our recent, theoretical research shows that studying two-photon measurements in regions with lower transverse momentum (\(p_{\mathrm {t},\gamma }\)) and invariant mass (\(M_{\gamma \gamma }\)) allows us to observe not only the main contribution of photon scattering, known as fermionic loops but also mechanisms like the VDM-Regge (double-photon hadronic fluctuation). In addition, diphoton measurements at low diphoton masses are crucial for studies of light-meson resonance contributions in \(\gamma \gamma \to \gamma \gamma \) scattering. We also focus on the interference between different contributions. For future experiments with the ALICE FoCal and ALICE-3 detectors, we have calculated background contamination and have explored possibilities to minimize their impact. Abstract Published by the Jagiellonian University 2025 authors
