Directed, Elliptic and Triangular Flow of Charged Hadrons in O + O, Kr + Kr, and Xe + Xe Collisions at $$\sqrt {{{s}_{{NN}}}} $$ = 6 GeV in the UrQMD Model for Conditions of SPD Experiment

Understanding the properties of nuclear matter at high baryon densities is essential for constructing the QCD phase diagram and determining the equation of state. At high baryon chemical potential, theoretical QCD calculations become challenging and less stable. Therefore, the study of nuclear matter in heavy-ion collisions in this energy region is an important task, as it allows us to determine its properties. One of the most important observables is azimuthal anisotropy, the measurement of which provides information on the transport properties and the equation of state of the created matter. To study azimuthal correlations, the single-particle distribution in $$\\phi $$ is expanded in a Fourier series, where the coefficients $${{\\upsilon }_{n}}$$ in front of each term are called the collective flow coefficients. The coefficients $${{\\upsilon }_{1}}$$ , $${{\\upsilon }_{2}}$$ , and $${{\\upsilon }_{3}}$$ correspond to directed, elliptic, and triangular flow, respectively. This work is devoted to the study of directed, elliptic, and triangular flow of charged hadrons in O + O, Kr + Kr, and Xe + Xe collisions at $$\\sqrt {{{s}_{{NN}}}} $$ = 6 GeV using the UrQMD model. The results, obtained from data without a hydrodynamic component, can serve as a reference point for interpreting future data from the SPD experiment at the NICA collider facility.