Possible Studies of Two-Particle Transverse Momentum Correlations in Proton–Proton and Deuteron–Deuteron Interactions at NICA Energies

Two-particle transverse momentum (P_T) correlations are investigated for proton–proton and deuteron–deuteron interactions at the center-of-mass energy of NN collisions of 10 GeV. The correlations between Λ-hyperons and anti-Λ-hyperons, K-, π-mesons and protons are calculated using the Geant4 FTF and Pythia 6.4 models. It is shown that P_T correlations between Λ-hyperons and strange particles in proton-proton interactions are stronger in the FTF model than in the Pythia model. Two-particle P_T correlations can be studied at the NICA SPD experiment. Studies of two-particle correlations can help clarify the mechanism of quark–gluon string fragmentation.