Related paper Measurement of visible cross sections in proton-lead collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV in van der Meer scans with the ALICE detector Rates of the T0 (top) and V0 (bottom) reference process as a function of beam separation for one typical pair of colliding bunches in the first vertical p-Pb scan. The solid red curve is a fit according to Equation 4.[png] [pdf] [png] [pdf]