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arXiv · 2510.19448

Probing the QGP through $p_T$-differential radial flow of heavy quarks

Maria Lucia Sambataro·Salvatore Plumari·Santosh K. Das·Vincenzo Greco
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Abstract

We introduce the $p_T$-differential radial flow $v_0(p_T)$ in the heavy-quark sector. Within an event-by-event Langevin framework, we show that this observable exhibits a strong sensitivity to the heavy quark-bulk interaction. It provides a powerful and novel tool to constrain the transport coefficients of heavy quarks in the QGP and, more generally, to assess the strength of the interaction of a Brownian particle in an expanding bulk medium. The results further indicate that heavy quarks exhibit collective behavior driven by the isotropic expansion of the QGP in heavy-ion collisions and, at low $p_T$, it offers a marked signature of the heavy quark hadronization mechanism.

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Maria Lucia Sambataro, Salvatore Plumari, Santosh K. Das, Vincenzo Greco. 2025-10-22. Probing the QGP through $p_T$-differential radial flow of heavy quarks. https://arxiv.org/abs/2510.19448

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