Jet modification via πœ‹0-hadron correlations in Au+Au collisions at βˆšπ‘ π‘β’π‘=200 GeV

  • PHENIX Collaboration

Research output: Contribution to journal β€Ί Article β€Ί peer-review

Abstract

High-momentum two-particle correlations are a useful tool for studying jet-quenching effects in the quark-gluon plasma. Angular correlations between neutral-pion triggers and charged hadrons with transverse momenta in the range 4-12 GeV/c and 0.5-7 GeV/c, respectively, have been measured by the PHENIX experiment in 2014 for Au+Au collisions at sNN=200 GeV. Suppression is observed in the yield of high-momentum jet fragments opposite the trigger particle, which indicates jet suppression stemming from in-medium partonic energy loss, while enhancement is observed for low-momentum particles. The ratio and differences between the yield in Au+Au collisions and p+p collisions, IAA and Ξ”AA, as a function of the trigger-hadron azimuthal separation, Δφ, are measured for the first time at the BNL Relativistic Heavy Ion Collider. These results better quantify how the yield of low-pT associated hadrons is enhanced at wide angle, which is crucial for studying energy loss as well as medium-response effects.

Original languageEnglish (US)
Article number044901
JournalPhysical Review C
Volume110
Issue number4
Early online dateOct 1 2024
DOIs
StatePublished - Oct 2024

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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