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@ARTICLE{Acharya:356817,
author = {Acharya, Shreyasi and others},
title = {{S}ystematic study of flow vector fluctuations in
$\sqrt{s_{{NN}}}$ = 5.02 {T}e{V} {P}b-{P}b collisions},
journal = {Physical review / C},
volume = {109},
number = {6},
issn = {2469-9985},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {GSI-2025-00200, arXiv:2403.15213. CERN-EP-2024-084},
pages = {065202},
year = {2024},
note = {Phys. Rev. C 109 (2024) 065202. 29 pages, 9 captioned
figures, 1 table, authors from page 23, published version,
figures at http://alice-publications.web.cern.ch/node/10850},
abstract = {Measurements of the p$_T$-dependent flow vector
fluctuations in Pb–Pb collisions at $\sqrt{s_{NN}}$ =
5.02TeV 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 $\sqrt{s_{NN}}$ = 5.02TeV with
two-particle correlations. Significant p$_T$-dependent
fluctuations of the V⃗$_2$ flow vector in Pb–Pb
collisions are found across different centrality ranges,
with the largest fluctuations of up to ∼15\% being present
in the 5\% most central collisions. In parallel, no evidence
of significant p$_T$-dependent fluctuations of V⃗$_3$ or
V⃗$_4$ is found. Additionally, evidence of flow angle and
magnitude fluctuations is observed with more than 5σ
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.},
keywords = {fluctuation: vector (INSPIRE) / heavy ion: scattering
(INSPIRE) / correlation: two-particle (INSPIRE) / quark
gluon: plasma (INSPIRE) / particle flow (INSPIRE) /
transverse momentum dependence (INSPIRE) / impact parameter
(INSPIRE) / ALICE (INSPIRE) / angular correlation (INSPIRE)
/ CERN LHC Coll (INSPIRE) / hydrodynamics (INSPIRE) /
boundary condition (INSPIRE) / 5020 GeV-cms/nucleon
(INSPIRE)},
cin = {ALI / DTL / CIT / EXM / ALICE@CERN},
ddc = {530},
cid = {I:(DE-Ds200)ALI-20080822OR105 /
I:(DE-Ds200)DTL-20051214OR031 /
I:(DE-Ds200)CIT-20110310OR121 /
I:(DE-Ds200)EXM-20080818OR100 / I:(DE-Ds200)Coll-CERN-ALICE},
pnm = {612 - Cosmic Matter in the Laboratory (POF4-612) / HGS-HIRe
- HGS-HIRe for FAIR (HGS-HIRe) / SUC-GSI-Heidelberg -
Strategic university cooperation GSI-U Heidelberg
(SUC-GSI-HE) / SUC-GSI-Frankfurt - Strategic university
cooperation GSI-U Frankfurt/M (SUC-GSI-FR) /
SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU
Darmstadt (SUC-GSI-DA) / STRONG-2020 - The strong
interaction at the frontier of knowledge: fundamental
research and applications (824093)},
pid = {G:(DE-HGF)POF4-612 / G:(DE-Ds200)HGS-HIRe /
G:(DE-Ds200)SUC-GSI-HE / G:(DE-Ds200)SUC-GSI-FR /
G:(DE-Ds200)SUC-GSI-DA / G:(EU-Grant)824093},
experiment = {EXP:(DE-H253)LHC-Exp-ALICE-20150101},
typ = {PUB:(DE-HGF)16},
eprint = {2403.15213},
howpublished = {arXiv:2403.15213},
archivePrefix = {arXiv},
SLACcitation = {$\%\%CITATION$ = $arXiv:2403.15213;\%\%$},
UT = {WOS:001270476000001},
doi = {10.1103/PhysRevC.109.065202},
url = {https://repository.gsi.de/record/356817},
}