A1 Journal article (refereed)
New constraints for QCD matter from improved Bayesian parameter estimation in heavy-ion collisions at LHC (2022)

Parkkila, J. E., Onnerstad, A., Taghavi, S. F., Mordasini, C., Bilandzic, A., Virta, M., & Kim, D. J. (2022). New constraints for QCD matter from improved Bayesian parameter estimation in heavy-ion collisions at LHC. Physics Letters B, 835, Article 137485. https://doi.org/10.1016/j.physletb.2022.137485

JYU authors or editors

Publication details

All authors or editors: Parkkila, J. E.; Onnerstad, A.; Taghavi, S. F.; Mordasini, C.; Bilandzic, A.; Virta, M.; Kim, D. J.

Journal or series: Physics Letters B

ISSN: 0370-2693

eISSN: 1873-2445

Publication year: 2022

Publication date: 06/10/2022

Volume: 835

Article number: 137485

Publisher: Elsevier

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.physletb.2022.137485

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/83726

Web address of parallel published publication (pre-print): https://arxiv.org/abs/2111.08145

Abstract

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 sNN=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.

Keywords: particle physics; quark-gluon plasma; quantum chromodynamics

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Ministry reporting: Yes

Reporting Year: 2022

JUFO rating: 2