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arXiv · 2207.13966

Non-equilibrium components in very low transverse momentum region in high-energy nuclear collisions

Yuuka Kanakubo·Yasuki Tachibana·Tetsufumi Hirano
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Abstract

We analyze Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV with a novel framework based on the dynamical core--corona picture that describes particle productions from both equilibrium and non-equilibrium components. We remark the possibility of the contribution from non-equilibrium components at very low transverse momentum ($p_{T}$) region and show that such contributions significantly affect $p_{T}$-integrated four-particle cumulants. These results strongly suggest the necessity of non-equilibrium components when one extracts properties of the quark-gluon plasma from experimental data using sophisticated dynamical models based on relativistic hydrodynamics.

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Yuuka Kanakubo, Yasuki Tachibana, Tetsufumi Hirano. 2022-07-28. Non-equilibrium components in very low transverse momentum region in high-energy nuclear collisions. https://doi.org/10.1103/physrevc.106.054908

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