  Extensive studies have been conducted in the past few decades to investigate
potential signatures of higher-order QED effects in high-energy electromagnetic
scattering processes. In our previous work, we have identified evidence of
higher-order corrections in the total cross-section for the Breit-Wheeler
process in relativistic heavy-ion collisions. However, the presence of
higher-order QED corrections cannot be unambiguously proven solely based on
total cross-section measurements due to substantial experimental and
theoretical uncertainties. The objective of this paper is to explore the
sensitivity of specific differential observables in the Breit-Wheeler process
to higher-order QED effects in high-energy heavy-ion collisions. These
investigations will provide guidance in determining the presence or absence of
higher-order QED processes by conducting precise measurements in future
experiments.
