Light-by-light scattering in ultraperipheral heavy ion collisions -- new possibilities
| Autor: | Szczurek, Antoni, Jucha, Pawel |
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| Rok vydání: | 2024 |
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| Druh dokumentu: | Working Paper |
| Popis: | 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. Comment: 9 pages, 8 figures, a talk given by A. Szczurek at the Zakopane 2024 Conference on Nuclear Physics, Zakopane, Poland, August 2024 |
| Databáze: | arXiv |
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