Journal Article

GSI-2021-00150

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Global fluid fits to identified particle transverse momentum spectra from heavy-ion collisions at the Large Hadron Collider

Devetak, D.GSI* ; Dubla, A.GSI* ; Floerchinger, S. ; Grossi, E. ; Masciocchi, S.GSI* ; Mazeliauskas, A. ; Selyuzhenkov, I.GSI*

2020
SISSA [Trieste]

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Please use a persistent id in citations: doi:10.1007/JHEP06(2020)044  doi:10.15120/GSI-2021-00150

Report No.: arXiv:1909.10485

Abstract: Transverse momentum spectra of identified particles produced in heavy-ion collisions at the Large Hadron Collider are described with relativistic fluid dynamics. We perform a systematic comparison of experimental data for pions, kaons and protons up to a transverse momentum of 3 GeV/c with calculations using the FluiduM code package to solve the evolution equations of fluid dynamics, the TrENTo model to describe the initial state and the FastReso code to take resonance decays into account. Using data in five centrality classes at the center-of-mass collision energy per nucleon pair $ \sqrt{s_{\mathrm{NN}}} $ = 2.76 TeV, we determine systematically the most likely parameters of our theoretical model including the shear and bulk viscosity to entropy ratios, the initialization time, initial density and freeze-out temperature through a global search and quantify their posterior probability. This is facilitated by the very efficient numerical implementation of FluiduM and FastReso. Based on the most likely model parameters we present predictions for the transverse momentum spectra of multi-strange hadrons as well as identified particle spectra from Pb-Pb collisions at $ \sqrt{s_{\mathrm{NN}}} $ = 5.02 TeV.

Keyword(s): transverse momentum: momentum spectrum ; heavy ion: scattering ; fluid: relativistic ; particle: spectrum ; freeze-out: temperature ; resonance: decay ; entropy: ratio ; CERN LHC Coll ; evolution equation ; initial state ; viscosity ; density ; hadron: production ; data analysis method

Note: 13 pages, 7 figures, published versionSCOAP3; CC-BY 4.0 "This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited"

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Contributing Institute(s):

1. ALICE (ALI)
2. IT (CIT)
3. ExtreMe Matter Institute (EMMI) (EXM)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF3-612) (POF3-612)

Experiment(s):

1. no experiment theory work (POF3; theory)

Appears in the scientific report 2020

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Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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