Jet modification via $π^0$-hadron correlations in Au$+$Au collisions at $\sqrt{s_{_{NN}}}=200$ GeV
Creators: name: PHENIX Collaboration
name: Abdulameer, N. J.
name: Acharya, U.
name: Adare, A.
name: Afanasiev, S.
name: Aidala, C.
name: Ajitanand, N. N.
name: Akiba, Y.
name: Al-Bataineh, H.
name: Alexander, J.
name: Alfred, M.
name: Aoki, K.
name: Apadula, N.
name: Aphecetche, L.
name: Asai, J.
name: Asano, H.
name: Atomssa, E. T.
name: Averbeck, R.
name: Awes, T. C.
name: Azmoun, B.
name: Babintsev, V.
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name: Baldisseri, A.
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name: Bannier, B.
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name: Barnes, P. D.
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name: Bathe, S.
name: Batsouli, S.
name: Baublis, V.
name: Baumann, C.
name: Bazilevsky, A.
name: Beaumier, M.
name: Beckman, S.
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name: Belmont, R.
name: Bennett, R.
name: Berdnikov, A.
name: Berdnikov, Y.
name: Bichon, L.
name: Bickley, A. A.
name: Blankenship, B.
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name: Chang, B. S.
name: Chang, W. C.
name: Charvet, J. L.
name: Chen, C. -H.
name: Chen, D.
name: Chernichenko, S.
name: Chiu, M.
name: Chi, C. Y.
name: Choi, I. J.
name: Choi, J. B.
name: Choudhury, R. K.
name: Chujo, T.
name: Chung, P.
name: Churyn, A.
name: Cianciolo, V.
name: Citron, Z.
name: Cole, B. A.
name: Connors, M.
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name: Csanád, M.
name: Csörgő, T.
name: d'Enterria, D.
name: Dahms, T.
name: Dairaku, S.
name: Danley, T. W.
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name: Daugherity, M. S.
name: David, G.
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name: Deshpande, A.
name: Desmond, E. J.
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Publisher: name: arXiv
Year: 2024
Subjects: subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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 $\sqrt{s_{_{NN}}}=200$~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, $I_{AA}$ and $Δ_{AA}$, as a function of the trigger-hadron azimuthal separation, $Δϕ$, are measured for the first time at the Relativistic Heavy Ion Collider. These results better quantify how the yield of low-$p_T$ associated hadrons is enhanced at wide angle, which is crucial for studying energy loss as well as medium-response effects.
description: 535 authors from 84 institutions, 12 pages, 8 figures. v2 is version accepted for publication in Physical Review C. HEPdata tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html