Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at sqrt(s_NN)=200 GeV: Jet-quenching and the response of partonic matter

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dc.creatorPHENIX Collaboration
dc.creatorAdare, A.
dc.date2007-05-22
dc.date.accessioned2026-07-07T11:56:51Z
dc.date.available2026-07-07T11:56:51Z
dc.descriptionAzimuthal angle Δϕcorrelations are presented for charged hadrons from dijets for 0.4 < p_T < 10 GeV/c in Au+Au collisions at sqrt(s_NN) = 200 GeV. With increasing p_T, the away-side distribution evolves from a broad to a concave shape, then to a convex shape. Comparisons to p+p data suggest that the away-side can be divided into a partially suppressed "head" region centered at Deltaϕ~ π, and an enhanced "shoulder" region centered at Deltaϕ~ π+/- 1.1. The p_T spectrum for the "head" region softens toward central collisions, consistent with the onset of jet quenching. The spectral slope for the "shoulder" region is independent of centrality and trigger p_T, which offers constraints on energy transport mechanisms and suggests that the "shoulder" region contains the medium response to energetic jets.
dc.description420 authors from 58 institutions, 6 pages, 4 figures. Submitted to Physical Review Letters. Plain text data 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
dc.identifierhttps://arxiv.org/abs/0705.3238
dc.identifierhttp://arxiv.org/abs/0705.3238
dc.identifierPhys.Rev.C77:011901,2008
dc.identifierdoi:10.1103/PhysRevC.77.011901
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/205680
dc.subjectNuclear Experiment
dc.titleTransverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at sqrt(s_NN)=200 GeV: Jet-quenching and the response of partonic matter
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