Tracing the emergence of collectivity phenomena in small systems

2022/12/05 by Schenke, B, Schlichting, S, Singh, P
#FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2212.02278

Abstract

We study initial state momentum correlations and event-by-event geometry in p+Pb collisions at √(s)=5.02~\rm TeV by following the approach of extending the IP-Glasma model to 3D using JIMWLK rapidity evolution. On examining the non-trivial rapidity dependence of the observables, we find that the geometry is correlated over large rapidity intervals, while the initial state momentum correlations have a relatively short range in rapidity. Based on our results, we discuss implications for the relevance of both effects in explaining the origin of collective phenomena in small systems.

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