Systematic study of flow vector fluctuations in √????????⁢????=5.02 TeV Pb-Pb collisions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F24%3A00598025" target="_blank" >RIV/61389005:_____/24:00598025 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/24:00598025

Result on the web

<a href="https://doi.org/10.1103/PhysRevC.109.065202" target="_blank" >https://doi.org/10.1103/PhysRevC.109.065202</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevC.109.065202" target="_blank" >10.1103/PhysRevC.109.065202</a>

Result language

angličtina

Original language name

Systematic study of flow vector fluctuations in √????????⁢????=5.02 TeV Pb-Pb collisions

Original language description

Measurements of the p(T)-dependent flow vector fluctuations in Pb-Pb collisions at root S-NN = 5.02 TeV using azimuthal correlations with the ALICE experiment at the Large Hadron Collider are presented. A four-particle correlation approach [ALICE Collaboration, Phys. Rev. C 107, L051901 (2023)] is used to quantify the effects of flow angle and magnitude fluctuations separately. This paper extends previous studies to additional centrality intervals and provides measurements of the p(T)-dependent flow vector fluctuations at root S-NN = 5.02 TeV with two-particle correlations. Significant p(T)-dependent fluctuations of the (V) over right arrow (2) flow vector in Pb-Pb collisions are found across different centrality ranges, with the largest fluctuations of up to similar to 15% being present in the 5% most central collisions. In parallel, no evidence of significant p(T)-dependent fluctuations of (V) over right arrow (3) or (V) over right arrow (4) is found. Additionally, evidence of flow angle and magnitude fluctuations is observed with more than 5 sigma significance in central collisions. These observations in Pb-Pb collisions indicate where the classical picture of hydrodynamic modeling with a common symmetry plane breaks down. This has implications for hard probes at high p(T), which might be biased by p(T)-dependent flow angle fluctuations of at least 23% in central collisions. Given the presented results, existing theoretical models should be reexamined to improve our understanding of initial conditions, quark-gluon plasma properties, and the dynamic evolution of the created system.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10304 - Nuclear physics

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review C

ISSN

2469-9985

e-ISSN

2469-9993

Volume of the periodical

109

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

19

Pages from-to

065202

UT code for WoS article

001270476000001

EID of the result in the Scopus database

2-s2.0-85196412464