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Heavy ion collisions provide a unique opportunity for studying the propertiesof exotic hadrons with two charm quarks. The production of $T_{cc}^+$ issignificantly enhanced in nuclear collisions compared to proton-protoncollisions due to the creation of multiple charm pairs. In this study, weemploy the Langevin equation in combination with the Instantaneous CoalescenceModel (LICM) to investigate the production of $T_{cc}^+$ and $\Xi_{cc}^{++}$which consists of two charm quarks. We consider $T_{cc}^+$ as molecular statescomposed of $D$ and $D^*$ mesons. The Langevin equation is used to calculatethe energy loss of charm quarks and $D$ mesons in the hot medium. Thehadronization process, where charm quarks transform into each $D$ state asconstituents of $T_{cc}^+$ production, is described using the coalescencemodel. The coalescence probability between $D$ and $D^*$ is determined by theWigner function, which encodes the information of the $T_{cc}^+$ wave function.Our results show that the $T_{cc}^+$ production varies by approximately oneorder of magnitude when different widths in the Wigner function, representingdistinct binding energies of $T_{cc}^+$, are considered. This variation offersvaluable insights into the nature of $T_{cc}^+$ through the analysis of itswave function. The $\Xi_{cc}^{++}$ is treated as a hadronic state produced atthe hadronization of the deconfined matter. Its production is also calculatedas a comparison with the molecular state $T_{cc}^+$.

Production of doubly charmed hadron $\Xi_{cc}^{++}$ and $T_{cc}^+$ in relativistic heavy ion collisions