Effects of nuclear charge fluctuations on dilepton photoproduction

Guansong Li,Kai Zhou,Baoyi Chen

Figure 2. Schematic diagram for two-photon scatterings $\gamma \gamma \to f\bar{f}$ (f is fermion) in the nuclear collisions. b is the impact parameter. The electric charges in the overlap area do not contribute to the two-photon scatterings. The origin of coordinates is set in the middle of two nuclear centers.