On the Azimuthal Flow of Protons in the Heavy Ion Collisions at $$\sqrt {{{s}_{{NN}}}} $$ = 2–4 GeV

One of the main goals of the heavy ion collision experiments is studying the properties of strongly interacting matter created at different states in the overlap region of two intercepting ions. At a relatively low energy of several-GeV per nucleon pair created matter can be characterized by high net baryon densities and relatively low temperatures. The azimuthal anisotropy or produced in the collision hadrons is a valuable probe of the properties of the matter within the overlap region. In this work I present the observation of the scaling properties of the directed flow of protons on energy of the collision as well as the system size. I also elaborate on the directed flow of protons dependence on the geometry of the collision.