Prompt Photon Production in Sub-Processes $${qg \to q\gamma }$$ and $${q\gamma \to q\gamma }$$ of Compton Scattering in Proton–Proton Collision at NICA Energies

Abstract—

Dependence of the differential cross section of the production of prompt photons with sub-processes of mixed chromo-electrodynamic \({qg \to q\gamma }\) and pure electrodynamic \({q\gamma \to q\gamma }\) Compton scattering on the total energy of colliding protons \({\sqrt s }\), the transverse momentum p_T of photons, the cosine of the scattering angle cos(θ), and the rapidity of photons y is studied. It has been shown that the purely electrodynamic sub-process can contribute up to the order of ten percent of the total cross-section of the production of prompt photons at NICA energies and, consequently, should be taken into account in simulating and analyzing experimental data.