Dataset

GSI-2025-00202

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Measurements of long-range two-particle correlation over a wide pseudorapidity range in p$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.0$ TeV

ALICE Collaboration (Corresponding author)

2024

Please use a persistent id in citations: doi:10.17182/HEPDATA.151801

Abstract: In this Letter, measurements of the long-range correlations in p--Pb collisions at $\sqrt{s_{\rm NN}} = 5.02$~TeV are extended to a pseudorapidity gap of $\Delta\eta\sim$8 between particles using the ALICE forward multiplicity detectors. After suppressing non-flow correlations, e.g., from jet and resonance decays, the ridge structure is observed to persist up to a very large gap of $\Delta\eta\sim$8 for the first time in p--Pb collisions. This shows that the collective flow-like correlations extend over an extensive pseudorapidity range also in small collision systems such as p--Pb collisions. The pseudorapidity dependence of the second-order anisotropic flow coefficient, \Veta, is extracted from the long-range correlations. The $v(\eta)$ results are presented for a wide pseudorapidity range of $-3.1 <\eta< 4.8$ in various centrality classes in p--Pb collisions. To gain a comprehensive understanding of the source of anisotropic flow in small collision systems, the $v(\eta)$ measurements are compared with hydrodynamic and transport model calculations. The comparison suggests that the final-state interactions play a dominant role in developing the anisotropic flow in small collision systems.

Note: Journal Article GSI record: GSI-2025-00201

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Contributing Institute(s):

1. ALICE (ALI)
2. Detektorlabor (DTL)
3. IT (CIT)
4. ExtreMe Matter Institute, EMMI (EXM)
5. Collaboration CERN: ALICE (ALICE@CERN)

Research Program(s):

1. 612 - Cosmic Matter in the Laboratory (POF4-612) (POF4-612)
2. HGS-HIRe - HGS-HIRe for FAIR (HGS-HIRe) (HGS-HIRe)
3. SUC-GSI-Heidelberg - Strategic university cooperation GSI-U Heidelberg (SUC-GSI-HE) (SUC-GSI-HE)
4. SUC-GSI-Frankfurt - Strategic university cooperation GSI-U Frankfurt/M (SUC-GSI-FR) (SUC-GSI-FR)
5. SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU Darmstadt (SUC-GSI-DA) (SUC-GSI-DA)
6. STRONG-2020 - The strong interaction at the frontier of knowledge: fundamental research and applications (824093) (824093)

Experiment(s):

1. LHC: ALICE

Appears in the scientific report 2024

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Acharya, S. ; Adamova, D. ; Aglieri Rinella, G. ; et al
Measurements of long-range two-particle correlation over a wide pseudorapidity range in p$-$Pb collisions at $\sqrt{s_{\rm NN}}=5.0$ TeV
Journal of high energy physics 01(1), 199 (2024) [10.1007/JHEP01(2024)199]2024   Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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