Related paper Coherent $ρ^0$ photoproduction in ultra-peripheral Pb-Pb collisions at $\mathbf{\sqrt{\textit{s}_{\rm NN}}} = 2.76$ TeV The cross section for coherent photoproduction of $\rho^0$, $\mathrm{d} \sigma/\mathrm{d}y$,in ultra-peripheral collisions for the three models compared with the ALICE result [png] [pdf]