Figure P.N.4

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Measurement of the inclusive isolated-photon production cross section in pp and Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.02$ TeV

\ In $\gamma$--jet PYTHIA 8 simulation embedded into MB \PbPb data, \ptIsoCh\ distribution for different UE estimation areas described in the text, $\pt > 12$ GeV/$c$ and narrow clusters with $0.1\sigmalongPb0.3$ in \PbPb central (left), semi-central (middle) and peripheral (right) collisions for $R=0.2$ (top) and $R=0.4$ (bottom).

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