The Future of Experimental Measurements of Light-by-Light Scattering

Light-by-light scattering is a relatively new area in experimental physics. Our recent, theoretical research shows that studying two photon measurements in regions with lower transverse momentum (pt,γ) and invariant mass (Mγγ) allows us to observe not only the main contribution of photon scattering, known as fermionic loops, but also mechanisms like the VDM–Regge. In addition, examining diphoton measurements in low invariant mass regions is crucial for researching light meson resonances in γγ → γγ 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 estimates and explored possibilities to minimize their impact.

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