Feasibility Studies of Light-by-light Scattering in ALICE with FoCal Phase Space
K. Zając, Adam Tomasz Matyja · Acta Physica Polonica B Proceedings Supplement · 2025
The ALICE experiment has significantly upgraded its detectors, enabling new measurements in ultra peripheral collisions of lead nuclei with an integrated luminosity of \(\mathcal {L} = 7\)/nb and 6/nb during Run 3 and Run 4, respectively. Investigation of light-by-light scattering in the low diphoton invariant mass is studied in this paper. The predictions presented here take into account the acceptance of the current EMCal and PHOS electromagnetic calorimeters, TPC and ITS tracking devices in the central barrel, as well as the future Forward Calorimeter, FoCal. Results from the SuperChic and UPCgen Monte Carlo generators are compared across all possible reconstruction topologies. Abstract Published by the Jagiellonian University 2025 authors