STAR experiment investigates the formation of the Quark Gluon Plasma via the heavy ion collisions taking place at the Relativistic Heavy Ion Collider situated at Brookhaven National Laboratory, Upton, NY. The production of charm quark occurs in the early stages of the heavy ion collisions dominantly via gluon fusion. Due to the fact that the yield of charm is affected by the conditions of the early stages of the collision, the measurement of the charm production provides a useful tool for description of the initial stage that took place. One of the most important findings of the experiments...