Abstract
The directed flow of inclusive, transported and nontransported (including produced) protons, as well as antiprotons, has been studied in the framework of an ultrarelativistic quantum molecular dynamics approach for $\text{Au}+\text{Au}$ collisions at $\sqrt{{s}_{NN}}=7.7$, 11.5, 19.6, 27, 39, 62.4 and 200 GeV. The rapidity, centrality, and energy dependence of directed flow for various proton groups are presented. It is found that the integrated directed flow decreases monotonically as a function of collision energy for $\sqrt{{s}_{NN}}=11.5$ GeV and beyond. However, the sign change of directed flow of inclusive protons, seen in experimental data as a function of centrality and collision energy, can be explained by the competing effect of directed flow between transported and nontransported protons. Similarly, the difference in directed flow between protons and antiprotons can be explained. Our study offers a conventional explanation on the cause of the ${v}_{1}$ sign change other than the antiflow component of protons alone, which is argued to be linked to a phase transition.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.