Influence of momentum-dependent interactions on balance energy and mass dependence

TL;DR

This study investigates how momentum-dependent interactions influence transverse flow and its disappearance in nuclear collisions across a range of masses, revealing different effects in light versus heavy nuclei and aligning well with experimental data.

Contribution

It demonstrates the significant role of momentum-dependent interactions in modeling balance energy and explains flow phenomena in nuclear collisions more accurately.

Findings

Momentum-dependent interactions affect flow differently in light and heavy nuclei.

Inclusion of these interactions explains the energy of vanishing flow in light nuclei.

Theoretical results agree well with experimental data across various nuclei.

Abstract

We aim to study the role of momentum-dependent interactions in transverse flow as well as in its disappearance. For the present study, central collisions involving mass between 24 and 394 are considered. We find that momentum-dependent interactions have different impact in lighter colliding nuclei compared to heavier colliding nuclei. In lighter nuclei, the contribution of mean field towards the flow is smaller compared to heavier nuclei where binary nucleon-nucleon collisions dominate the scene. The inclusion of momentum-dependent interactions also explains the energy of vanishing flow in $^{12}C+^{12}C$ reaction which was not possible with the static equation of state. An excellent agreement of our theoretical attempt is found for balance energy with experimental data throughout the periodic table.