Rapidity distribution dependence of the transition energy in heavy-ion collisions

TL;DR

This study investigates how the transition energy from in-plane to out-of-plane emission in heavy-ion collisions depends on the rapidity distribution, using simulations of gold-gold reactions with a hard equation of state.

Contribution

It demonstrates the dependence of transition energy on the rapidity bin size and provides a parameterization of this relationship.

Findings

Transition occurs only when mid-rapidity is included.

Transition energy strongly depends on rapidity bin size.

Transition energy can be linearly interpolated.

Abstract

For the present analysis, simulations are carried out for thousand of events for the reaction of 79Au197 + 79Au197 at semi-central geometry using a hard equation of state. The whole of the analysis is performed for light charged particles (LCP's). The transition from in-plane to out-of-plane is observed only when the mid-rapidity region is included in the rapidity bin otherwise no transition is observed. The transition energy is found to be strongly dependent on the size of the rapidity bin. The transition energy is parameterized with a straight line interpolation.