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Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at √s.sub.NN./sub.=200 GeV: Jet quenching and the response of partonic matter
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SYSNO ASEP 0322426 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Transverse momentum and centrality dependence of dihadron correlations in Au+Au collisions at √sNN=200 GeV: Jet quenching and the response of partonic matter Title Příčný moment a závislost centrality dihadronových korelací ve srážkách Au+Au při √sNN=200 GeV: Jet-quenching a odezva partonové hmoty Author(s) Adare, A. (US)
Afanasiev, S. (RU)
Aidala, C. (US)
Kubart, J. (CZ)
Mašek, L. (CZ)
Mikeš, P. (CZ)
Tomášek, Lukáš (FZU-D) RID, ORCID
Vrba, Václav (FZU-D) RID, ORCIDSource Title Physical Review. C - ISSN 0556-2813
Roč. 77, č. 1 (2008), 011901/1-011901/6Number of pages 6 s. Language eng - English Country US - United States Keywords PHENIX experiment ; Au+Au collisions ; transverse momentum ; centrality dependence Subject RIV BF - Elementary Particles and High Energy Physics R&D Projects LA08015 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) 1P04LA211 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA202/05/0653 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z10100502 - FZU-D (2005-2011) UT WOS 000252863600003 DOI 10.1103/PhysRevC.77.011901 Annotation Azimuthal angle (Δφ) correlations are presented for charged hadrons from dijets for 0.4< pT < 10 GeV/c in Au+Au collisions at s(NN)=200 GeV. With increasing pT, the away-side distribution evolves from a broad and relatively flat shape 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 Δφ π and an enhanced "shoulder" region centered at Δφ π+/-1.1. The pT 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 pT, which offers constraints on energy transport mechanisms and suggests that it contains the medium response to energetic jets. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2009
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