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Electric-charge-dependent directed flow splitting of produced quarks in Au+Au collisions

We report directed flow (v1) of multistrange baryons (Ξ and Ω) and improved v1 data for K−, p¯, Λ¯ and ϕ in Au+Au collisions at sNN=27 and 200 GeV from the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). We focus on particles whose constituent quarks are not transported from the incom...

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Bibliographic Details
Main Authors: Aboona, Bassam (Author) , Deppner, Ingo Martin (Author) , Leung, Yue (Author) , Söhngen, Yannick (Author)
Corporate Author: STAR Collaboration (Author)
Format: Article (Journal)
Language:English
Published: March 2025
In: Physics letters
Year: 2025, Volume: 862, Pages: 1-8
ISSN:1873-2445
DOI:10.1016/j.physletb.2025.139245
Online Access:Verlag, kostenfrei, Volltext: https://doi.org/10.1016/j.physletb.2025.139245
Verlag, kostenfrei, Volltext: https://www.sciencedirect.com/science/article/pii/S037026932500005X
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Author Notes:The STAR Collaboration*
Description
Summary:We report directed flow (v1) of multistrange baryons (Ξ and Ω) and improved v1 data for K−, p¯, Λ¯ and ϕ in Au+Au collisions at sNN=27 and 200 GeV from the STAR experiment at the Relativistic Heavy Ion Collider (RHIC). We focus on particles whose constituent quarks are not transported from the incoming nuclei but instead are produced in the collisions. At intermediate impact parameters, we examine quark coalescence behavior for particle combinations with identical quark content, and search for any departure from this behavior (“splitting”) for combinations having non-identical quark content. Under the assumption of quark coalescence for produced quarks, the splitting strength appears to increase with the electric charge difference of the constituent quarks in the combinations, consistent with electromagnetic effect expectations.
Item Description:Online verfügbar: 17. Januar 2025, Artikelversion: 27. Januar 2025
*The STAR Collaboration: B.E.Aboona, I.M. Deppner, Y.H. Leung, Y. Söhngen [und 347 weitere Personen]
Gesehen am 14.10.2025
Physical Description:Online Resource
ISSN:1873-2445
DOI:10.1016/j.physletb.2025.139245

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