Ultra-peripheral physics with ATLAS

This talk gives an overview of the latest ultra-peripheral physics measurements performed with the ATLAS detector at the LHC. New measurements of exclusive dilepton production (electron, muon, and tau pairs) are presented. This process provides detailed constraints on the nuclear photon flux and its dependence on the impact parameter and photon energy. This talk reports the measurements of the tau-lepton anomalous magnetic moment, a_tau. Measurements of light-by-light scattering, which result in an observation of this elusive Standard Model process and set competitive limits on the parameter space for axion-like particles, will be discussed as well. The photon can also proide a clean probe of the partonic structure of the nucleus analogous to deep inelastic scattering. A new measurement of dijet production in ultra-peripheral Pb+Pb collisions will be shown.