$\sigma_{\rm long}^{2}$ (left) and $\sigma_{\rm short}^{2}$ (right) distributions in three energy intervals for photons, electrons, hadrons, $\pi^{0}$ and $\eta$ mesons. The distributions are obtained using the V1 clusterizer from a simulation of pp collisions at $\sqrt{s}=13$ TeV performed with the PYTHIA event generator, in which events are required to contain either two jets or a jet and a high-energy direct photon. Each distribution is normalized to its integral. A model simulating the effect of the cross talk was applied as discussed in Sec. 5.8.