New constraints for QCD matter from improved Bayesian parameter estimation in heavy-ion collisions at LHC

被引：38

作者：

Parkkila, J. E. ^{[1
,2
,3
]}

Onnerstad, A. ^{[1
,2
]}

Taghavi, S. F. ^{[4
]}

Mordasini, C. ^{[1
,4
]}

Bilandzic, A. ^{[4
]}

Virta, M. ^{[1
,2
]}

Kim, D. J. ^{[1
,2
]}

机构：

[1] Univ Jyvaskyla, Dept Phys, POB 35, FI-40014 Jyvaskyla, Finland

[2] Univ Helsinki, Helsinki Inst Phys, POB 64, FI-00014 Helsinki, Finland

[3] CERN, Expt Phys Dept, Geneva, Switzerland

[4] Tech Univ Munich, Phys Dept, Munich, Germany

来源：

PHYSICS LETTERS B | 2022年 / 835卷

基金：

欧洲研究理事会; 芬兰科学院;

关键词：

PB-PB COLLISIONS; CENTRALITY DEPENDENCE; DENSITY; HOT;

D O I：

10.1016/j.physletb.2022.137485

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The transport properties of quark-gluon plasma created in relativistic heavy-ion collisions are quantified by an improved global Bayesian analysis using the CERN Large Hadron Collider Pb-Pb data at root s(NN) = 2.76 and 5.02 TeV. The results show that the uncertainty of the extracted transport coefficients is significantly reduced by including new sophisticated collective flow observables from two collision energies for the first time. This work reveals the stronger temperature dependence of specific shear viscosity, a lower value of specific bulk viscosity, and a higher hadronization switching temperature than in the previous studies. The sensitivity analysis confirms that the precision measurements of higher-order harmonic flow and their correlations are crucial in extracting accurate values of the transport properties. (C) 2022 The Author(s). Published by Elsevier B.V.

引用

页数：9

共 68 条

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