The article presents studies of event-by-event fluctuations in the mean transverse momentum, ⟨𝑝T⟩,
of charged particles in Pb–Pb and Xe–Xe collisions at √𝑠NN = 5.02 TeV and √𝑠NN = 5.44 TeV,
respectively, with the ALICE detector at the LHC. Significant dynamical fluctuations, indicative
of correlated particle emission, are observed in both collision systems. Central Pb–Pb and Xe–Xe
collisions exhibit a decrease in fluctuations compared to peripheral collisions, aligning qualitatively
with prior measurements in Pb–Pb collisions at √𝑠NN = 2.76 TeV. The findings are compared with
the results from the HIJING model. A deviation from a simple superposition scenario, wherein
final state particles arise from the superposition of emitting sources, is observed