Exclusive $\gamma \gamma \rightarrow l^+l^-$ Production at $\sqrt {s}$ = 7 TeV with the ATLAS Experiment

This proceeding reports a measurement of the exclusive γγ → l+l− (l = e,μ) cross section in proton–proton collisions at a center-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb−1. The measured cross section is found to be consistent with theory prediction, when proton absorptive effects due to the finite size of the proton are taken into account in the calculation.