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PHENIX study of dihadron correlation in Au+Au collision at \( \sqrt {s_{NN} } \) = 200 GeV: jet quenching and medium response

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Abstract

We provide a detailed survey study of dihadron azimuthal angle (Δϕ) correlations in a broad range of transverse momentum (0.4 < p T < 10 GeV/c) and centrality (0–92%) in Au+Au collisions at 149-2 = 200 GeV. The evolution of the jet shape and yield with p T seems to suggest two distinct components at the away-side pairs: a suppressed jet fragmentation component around Δϕ ∼ π, and a medium-induced components around |Δϕ − π| ∼ 1.1. The former dominates p T > 5 GeV/c and the later dominates at p T < 4 GeV/c.

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Authors and Affiliations

  1. Department of Chemistry, Stony Brook University, Stony Brook, NY, 11794, USA

    Jiangyong Jia

  2. Department of Physics, Brookhaven National Laboratory, Upton, NY, 11796, USA

    Jiangyong Jia

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  1. Jiangyong Jia
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Correspondence to Jiangyong Jia.

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for the PHENIX Collaboration

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Jia, J. PHENIX study of dihadron correlation in Au+Au collision at \( \sqrt {s_{NN} } \) = 200 GeV: jet quenching and medium response. Indian J Phys 85, 149–154 (2011). https://doi.org/10.1007/s12648-011-0033-7

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  • DOI: https://doi.org/10.1007/s12648-011-0033-7

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