Speaker
Description
We investigate the interactions of the deuteron with light mesons during the hadronic phase in heavy-ion collisions. For this purpose, we treat the deuteron as a bound state of two nucleons and analyze the evolution of the cross-sections in interactions between the deuteron and pions. We begin by using effective Lagrangians obtained through chiral perturbation theory to estimate the vacuum and thermally-averaged cross-sections for elastic processes $N + \pi \rightarrow N + \pi \quad \text{and} \quad N' + \pi \rightarrow N' + \pi$. These processes are employed in the quasi-free approximation approach to calculate the vacuum and thermally-averaged cross-sections for deuteron dissociation and production, namely, $d + \pi \rightarrow N + N' + \pi$ and the corresponding inverse reaction. Finally, we use these processes in a rate equation to estimate the time evolution of the deuteron multiplicity under two initial condition scenarios: the statistical hadronization model and the coalescence model, where the deuteron is treated as a hadronic molecule.
