Abstract
MMT-DY process in case of polarized beams at SPD may allow to measure the full set of leading TMDs and provide an access to GPDs, thus is of great interest to study at NICA. But this process is always accompanied with a huge background. Minimum-bias background, as the most strong one, together with some QCD processes, were simulated by use of PYTHIA6.4 Monte Carlo generator and compared to the signal process at the case of proton-proton beams with Ecm = 27 GeV. The processes were considered in the two regions of muon pair invariant mass. The set of criteria for background discrimination is proposed. The efficiencies of these criteria are estimated.
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