Apr 4 – 10, 2022
Auditorium Maximum UJ
Europe/Warsaw timezone
Proceedings submission deadline extended to August 15, 2022

Model investigations of the beam-energy dependence of the transverse momentum and flow correlations

Apr 6, 2022, 7:18 PM
Poster Hadron production and collective dynamics Poster Session 2 T14_1


Dr Niseem Abdelrahman (University of Illinois at Chicago) Roy Lacey (Stony Brook University)


Extraction of the Quark-Gluon Plasma (QGP) transport properties (i.e. specific shear viscosity $\eta/s$) is a prime goal of the heavy-ion programs at the Relativistic Heavy-Ion Collider (RHIC) and the Large Hadron Collider (LHC). Correlators that are sensitive to both initial-state effects and final-state viscous attenuation can give invaluable constraints for temperature ($T$) and chemical potential ($\mu_{B}$) dependence of $\eta/s$. The $\rho(v^{n}_{2},\langle p_{T} \rangle)$ correlator, that gives the strength of the correlation between an event’s mean-transverse momentum $[p_{\mathrm{T}}]$ and its $v_2$ magnitude, shows more sensitivity to the initial state than to final stat effects [1--2]. Correspondingly, the transverse momentum correlator $G_{2}\left(\Delta\eta,\Delta\varphi\right)$ has been shown to be sensitive to $\eta/s$ [3--4]. A comprehensive set of $G_{2}\left(\Delta\eta,\Delta\varphi\right)$ and $\rho(v^{2}_{2},\langle p_{T} \rangle)$ calculations for Au+Au collisions spanning the beam energy range $\sqrt{s_{\rm NN}}$ = 2760--19.6 GeV using the Hydro-hybrid, AMPT and EPOS models, will be presented for several centralities and event shape selections. Our simulated results [1--4] show characteristic beam-energy-dependent and event shape trends that can give significant constraints for the respective influence of initial-state fluctuations, system-size, system-shape, and $\eta/s(\mu_{B},T)$.

[1]~N. Magdy, et al., Phys.Lett.B 821 (2021) 136625
[2]~N. Magdy, et al., arXiv:2111.07406
[3]~N. Magdy, et al., Phys.Rev.C 104 (2021)
[4]~N. Magdy, et al., Eur.Phys.J.C 81 (2021) 8, 779

Primary authors

Arkadiy Taranenko (NRNU MEPhI) Iurii Karpenko (FNSPE CTU in Prague) Dr Niseem Abdelrahman (University of Illinois at Chicago) Roy Lacey (Stony Brook University)

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