Conserved number fluctuations in interacting hadron resonance gas model

被引：2

作者：

Behera, S. P. ^{[1
]}

Mishra, D. K. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Nucl Phys Div, Mumbai 400085, India

来源：

NUCLEAR PHYSICS A | 2022年 / 1024卷

关键词：

Hadron resonance gas; Van-der Waals; Excluded volume; Thermodynamic parameters; HEAVY-ION COLLISIONS; MULTIPLICITY DISTRIBUTIONS; MOMENTS; MATTER;

D O I：

10.1016/j.nuclphysa.2022.122475

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Fluctuations of net-baryon, net-charge and net-strangeness numbers are studied within the framework of ideal hadron resonance gas (IHRG), including attractive and repulsive van der Waals interactions. The binding energy and thermodynamic parameters are calculated for different extended versions of the HRG (E-HRG) model. The susceptibility ratios of conserved numbers are estimated in full phase-space using various HRG models that show a strong dependence on collision energies. The effect of kinematic cuts (transverse momentum (pT) and pseudo-rapidity (eta)) on those ratios of conserved numbers are also discussed. It is observed that, the normalized susceptibility ratios as a function of collision energies strongly depend on lower pT cut-off and A eta window. The E-HRG models are very sensitive to kinematic acceptance even for net-proton fluctuations. The susceptibility ratios calculated from different HRG models with proper kinematic acceptances are compared with the experimental measurements, which will help to better understand the phase transition and existence of critical point in the QCD phase diagram. (C) 2022 Elsevier B.V. All rights reserved.

引用

页数：20

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