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arXiv · 2412.12695

Light-by-light scattering in ultraperipheral heavy ion collisions -- new possibilities

Antoni Szczurek·Pawel Jucha
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Abstract

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 ($p_{t,\gamma}$) 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.

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Antoni Szczurek, Pawel Jucha. 2024-12-17. Light-by-light scattering in ultraperipheral heavy ion collisions -- new possibilities. https://arxiv.org/abs/2412.12695

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