Elliptic flow and Number of Constituent Quarks scaling provide crucial insights into the underlying dynamics and degrees of freedom in heavy-ion collisions. This article provides some insights on the transition from hadronic to partonic collectivity, revealing possible key signatures of medium evolution. At low energies around ( \(\sqrt{s_\textrm{NN}} \le 4.0\) GeV), \(v_2\) may be negative and NCQ scaling might break down. We expect that as the collision energy rises beyond 4.0 GeV, \(v_2\) may become positive and NCQ scaling gradually restores. The transition in \(v_2\) behavior, coupled with the breakdown and restoration of NCQ scaling, highlights the increasing significance of partonic interactions at higher energies, marking the onset of partonic collectivity and the emergence of quark-gluon plasma (QGP)-like properties.

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Some Insights on the Partonic Collectivity in Heavy-Ion Collisions

  • Rajeev Singh

摘要

Elliptic flow and Number of Constituent Quarks scaling provide crucial insights into the underlying dynamics and degrees of freedom in heavy-ion collisions. This article provides some insights on the transition from hadronic to partonic collectivity, revealing possible key signatures of medium evolution. At low energies around ( \(\sqrt{s_\textrm{NN}} \le 4.0\) GeV), \(v_2\) may be negative and NCQ scaling might break down. We expect that as the collision energy rises beyond 4.0 GeV, \(v_2\) may become positive and NCQ scaling gradually restores. The transition in \(v_2\) behavior, coupled with the breakdown and restoration of NCQ scaling, highlights the increasing significance of partonic interactions at higher energies, marking the onset of partonic collectivity and the emergence of quark-gluon plasma (QGP)-like properties.