G5 Doctoral dissertation (article)
Quantifying the transport properties of quark-gluon plasma through measurement of higher harmonic flow and their non-linear response (2021)

Parkkila, J. (2021). Quantifying the transport properties of quark-gluon plasma through measurement of higher harmonic flow and their non-linear response [Doctoral dissertation]. University of Jyväskylä. JYU dissertations, 460. http://urn.fi/URN:ISBN:978-951-39-8932-3

JYU authors or editors

Publication details

All authors or editors: Parkkila, Jasper

eISBN: 978-951-39-8932-3

Journal or series: JYU dissertations

eISSN: 2489-9003

Publication year: 2021

Number in series: 460

Number of pages in the book: 1 verkkoaineisto (83 sivua, 71 sivua useina numerointijaksoina)

Publisher: University of Jyväskylä

Publication country: Finland

Publication language: English

Persistent website address: http://urn.fi/URN:ISBN:978-951-39-8932-3

Publication open access: Openly available

Publication channel open access: Open Access channel

Abstract

The elusive goal of heavy-ion physics is to understand the transport properties of the quark-gluon plasma (QGP), the form of nuclear matter at extreme temperatures, that prevailed in the first few microseconds after the Big Bang. Transport coefficients, such as the temperature dependent specific shear viscosity η/sand specific bulk viscosity ζ/s, can be constrained with the help of flow measurements. The higher harmonic flow observables and their non-linear responses to the initial state anisotropy have shown compelling potential to constrain the transport properties due to their high sensitivity to various stages of heavy-ion collisions. In this thesis, the measurements of higher harmonic flow up to the ninth order, and their non-linear flow modes up to the seventh harmonic in Pb–Pb collisions with ALICE at CERN-LHC are presented. These measurements are utilized in a Bayesian analysis to constrain the QGP properties and initial conditions of such collisions. In addition, the sensitivities of the high harmonic flow observables to various model parameters are quantified for the first time. This work suggests that a more dynamical picture of the initial conditions is needed to improve the understanding of the uncertainties of the extracted QGP properties or the model building blocks.

Keywords: physics; elementary particles; particle accelerators; collision

Free keywords: Pb–Pb collisions; ALICE; quark-gluon plasma (QGP); physics; elementary particles; particle accelerators; collision

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2021