Particle-Species Dependent Modification of Jet-Induced Correlations in Au+Au Collisions at sNN=200GeV

S. Afanasiev et al. (PHENIX Collaboration)
Phys. Rev. Lett. 101, 082301 – Published 20 August 2008

Abstract

Measurements in Au+Au collisions at sNN=200GeV of jet correlations for a trigger hadron at intermediate transverse momentum (pT,trig) with associated mesons or baryons at lower pT,assoc indicate strong modification of the away-side jet. The ratio of jet-associated baryons to mesons increases with centrality and pT,assoc. For the most central collisions, the ratio is similar to that for inclusive measurements. This trend is incompatible with in-vacuum fragmentation but could be due to jetlike contributions from correlated soft partons, which recombine upon hadronization.

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  • Received 18 December 2007

DOI:https://doi.org/10.1103/PhysRevLett.101.082301

©2008 American Physical Society

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Vol. 101, Iss. 8 — 22 August 2008

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