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Light nuclei collectivity from √sNN=3 GeV Au+Au collisions at RHIC

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In high-energy heavy-ion collisions, partonic collectivity is evidenced by the constituent quark number scaling of elliptic flow anisotropy for identified hadrons. A breaking of this scaling and dominance of baryonic interactions is found for identified hadron collective flow measurements in sNN = 3...

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Main Authors: Abdallah, Mohamed Samy (Author) , Deppner, Ingo Martin (Author) , Herrmann, Norbert (Author) , Söhngen, Yannick (Author) , Weidenkaff, Philipp (Author)
Corporate Author: STAR Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 4 February 2022
In: Physics letters
Year: 2022, Volume: 827, Pages: 1-7
ISSN:1873-2445
DOI:10.1016/j.physletb.2022.136941
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1016/j.physletb.2022.136941
Verlag, lizenzpflichtig, Volltext: https://www.sciencedirect.com/science/article/pii/S0370269322000752
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Author Notes:STAR Collaboration*
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Summary:In high-energy heavy-ion collisions, partonic collectivity is evidenced by the constituent quark number scaling of elliptic flow anisotropy for identified hadrons. A breaking of this scaling and dominance of baryonic interactions is found for identified hadron collective flow measurements in sNN = 3 GeV Au+Au collisions. In this paper, we report measurements of the first- and second-order azimuthal anisotropic parameters, v1 and v2, of light nuclei (d, t, 3He, 4He) produced in sNN = 3 GeV Au+Au collisions at the STAR experiment. An atomic mass number scaling is found in the measured v1 slopes of light nuclei at mid-rapidity. For the measured v2 magnitude, a strong rapidity dependence is observed. Unlike v2 at higher collision energies, the v2 values at mid-rapidity for all light nuclei are negative and no scaling is observed with the atomic mass number. Calculations by the Jet AA Microscopic Transport Model (JAM), with baryonic mean-field plus nucleon coalescence, are in good agreement with our observations, implying baryonic interactions dominate the collective dynamics in 3 GeV Au+Au collisions at RHIC.
Item Description:Online verfügbar 1 Februar 2022, Artikelversion 4 Februar 2022
Im Titel steht der Ausdruck "sNN" unter dem Wurzelsymbol
*STAR Collaboration: M.S. Abdallah, I.M. Deppner, N. Herrmann, Y. Söhngen, P. Weidenkaff [und 392 weitere Personen]
Gesehen am 20.02.2023
Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2022.136941

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