Szczegóły publikacji

We calculate differential distributions for diffractive production of dijets ′ in the ep → e p jet jet reaction using off-diagonal unintegrated gluon distributions, often called GTMDs for brevity. Different models are used. We focus on the contribution to exclusive qq̄ dijets. The results of our calculations are compared with the H1 and ZEUS data. Except for one GTMD, our results are below the HERA data points. This is in contrast with recent results where the normalization was adjusted to some selected distributions and no agreement with other observables was checked. We conclude that the calculated cross sections are only a small part of the measured ones which probably contain also processes with Pomeron remnant, Reggeon exchange, etc. We present also azimuthal correlations between the sum and the difference of dijet transverse momenta. The cuts on transverse momenta of jets generate azimuthal correlations (in this angle) which can be easily misinterpreted as due to the so-called elliptic GTMD.