Event Plane Dependence of Di-hadron Correlations with Event Shape Engineering at the STAR Experiment

Journal Article · 21 January 2019 · Nuclear Physics. A

DOI: https://doi.org/10.1016/j.nuclphysa.2018.11.013 · OSTI ID:1514704

Aoyama, Ryo ^[1]

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1. Univ. of Tsukuba, Ibaraki (Japan)

In high-energy nuclear collisions, di-hadron correlations are used as a probe to study energy-loss mechanisms of jets in the Quark-Gluon Plasma (QGP). In order to understand the interplay between jet-medium interaction and medium expansion, we measured di-hadron correlations where events were classified by the trigger-hadron’s angle with respect to the event plane. We further constrained the collision geometry using event-shape engineering based on the magnitude of the reduced flow vector q₂. This measurement provides new and unique constraints for the dependence of energy loss of jets on in-medium path length and the role of flow.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
• Contributing Organization: STAR Collaboration
• Grant/Contract Number: SC0012704
• OSTI ID: 1514704
• Report Number(s): BNL--211608-2019-JAAM
• Journal Information: Nuclear Physics. A, Journal Name: Nuclear Physics. A Journal Issue: C Vol. 982; ISSN 0375-9474
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English