  We study the azimuthal angular decorrelation of the dijet production via
photon fusion in ultra-peripheral heavy ion collisions. The impact parameter
dependent cross section of quark-antiquark pairs production is derived using
the equivalent photon approximation, and the contribution from final-state QCD
radiations to the azimuthal angular distribution are calculated within
Soft-Collinear Effective Theory. We carry out the QCD resummation of large
logarithms of the azimuthal angle as well as the jet radius at next-to-leading
logarithmic accuracy. In the end we present the normalized differential cross
section for azimuthal decorrelation of the dijet pair and find that our results
are consistent with the measurements reported by the ATLAS collaboration.

High Energy Physics - Phenomenology;High Energy Physics - Experiment;Nuclear Theory