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Correlations between flow and transverse momentum in Xe + Xe and Pb + Pb collisions at the LHC with the ATLAS detector: a probe of the heavy-ion initial state and nuclear deformation

The correlations between flow harmonics vn for n = 2, 3, and 4 and mean transverse momentum [pT ] in 129 Xe + 129 Xe and 208 Pb + 208 Pb collisions at √s = 5.44 and 5.02 TeV, respectively, are measured using charged particles with the ATLAS detector. The correlations are potentially sensitive to the...

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Hauptverfasser: Aad, Georges (VerfasserIn) , Baltes, Lisa Marie (VerfasserIn) , Bartels, Falk (VerfasserIn) , Castillo, Florencia Luciana (VerfasserIn) , Czurylo, Marta (VerfasserIn) , Rio, Fernando del (VerfasserIn) , Dittmeier, Sebastian (VerfasserIn) , Dunford, Monica (VerfasserIn) , Franchino, Silvia (VerfasserIn) , Klassen, Martin (VerfasserIn) , Krishnan, Anjali (VerfasserIn) , Mkrtchyan, Tigran (VerfasserIn) , Ott, Philipp (VerfasserIn) , Rassloff, Damir Fabrice (VerfasserIn) , Rodriguez Bosca, Sergi (VerfasserIn) , Sauer, Christof (VerfasserIn) , Schöning, André (VerfasserIn) , Schultz-Coulon, Hans-Christian (VerfasserIn) , Sothilingam, Varsiha (VerfasserIn) , Stamen, Rainer (VerfasserIn) , Starovoitov, Pavel (VerfasserIn) , Vigani, Luigi (VerfasserIn) , Weber, Sebastian (VerfasserIn) , Wessels, Martin (VerfasserIn) , Yue, Xiaoguang (VerfasserIn) , Zinßer, Joachim (VerfasserIn)
Körperschaft: ATLAS Collaboration (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 15 May 2023
In: Physical review
Year: 2023, Jahrgang: 107, Heft: 5, Pages: 1-28
ISSN:2469-9993
DOI:10.1103/PhysRevC.107.054910
Online-Zugang:Verlag, kostenfrei, Volltext: https://doi.org/10.1103/PhysRevC.107.054910
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.107.054910
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Verfasserangaben:G. Aad et al.* (ATLAS Collaboration)
Beschreibung
Zusammenfassung:The correlations between flow harmonics vn for n = 2, 3, and 4 and mean transverse momentum [pT ] in 129 Xe + 129 Xe and 208 Pb + 208 Pb collisions at √s = 5.44 and 5.02 TeV, respectively, are measured using charged particles with the ATLAS detector. The correlations are potentially sensitive to the shape and size of the initial geometry, nuclear deformation, and initial momentum anisotropy. The effects from nonflow and centrality fluctuations are minimized, respectively, via a subevent cumulant method and an event-activity selection based on particle production at very forward rapidity. The vn-[pT ] correlations show strong dependencies on centrality, harmonic number n, pT , and pseudorapidity range. Current models qualitatively describe the overall centrality- and system-dependent trends but fail to quantitatively reproduce all features of the data. In central collisions, where models generally show good agreement, the v2 -[pT ] correlations are sensitive to the triaxiality of the quadruple deformation. Comparison of the model with the Pb + Pb and Xe + Xe data confirms that the 129 Xe nucleus is a highly deformed triaxial ellipsoid that has neither a prolate nor oblate shape. This provides strong evidence for a triaxial deformation of the 129 Xe nucleus from high-energy heavy-ion collisions.
Beschreibung:Gesehen am 18.11.2024
The ATLAS collaboration: G. Aad, L.M. Baltes, F. Bartels, F.L. Castillo, M.M. Czurylo, F. Del Rio, S. Dittmeier, M. Dunford, S. Franchino, M. Klassen, A. Krishnan, T. Mkrtchyan, P. Ott, D.F. Rassloff, S. Rodriguez Bosca, C. Sauer, A. Schoening, H.C. Schultz-Coulon, V. Sothilingam, R. Stamen, P. Starovoitov, L. Vigani, S.M. Weber, M. Wessels, X. Yue, J. Zinsser [und 2872 weitere]
Beschreibung:Online Resource
ISSN:2469-9993
DOI:10.1103/PhysRevC.107.054910

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