Inclusive and isolated photons in double-pomeron-exchange processes

We compute prompt photon production in double-Pomeron exchange events in pp collisions at 13 TeV using the resolved-Pomeron-model assumptions. We make use of the proton diffractive pdf imposing specific kinematical constraints from the LHC experiments. For the hard-scattering matrix element computation, we make use of the JetPhox program. We show that NLO contributions must be taken into account in order to constraint quarks and gluons inside Pomeron.