  We present new NLO pQCD predictions for photoproduction of dijets in
ultraperipheral PbPb collisions at 5.02 TeV with a realistic photon flux and
up-to-date nuclear PDFs. Our calculation of the impact parameter dependence of
the photon flux includes the effects of the nuclear form factor in the
photon-emitting nucleus and the spatial dependence of nuclear PDFs of the
target nucleus, which are estimated using the Wood-Saxon nuclear density
profile. We show that a significant portion of the measured dijets at large
$z_\gamma$ originate from events with impact parameters of the order of a few
nuclear radii, and that the cross section predictions therefore become
sensitive to the modelling of the nuclear geometry and photon flux close to the
source nucleus.
