High pt correlations at RHIC: Further evidence for medium-induced energy loss

by Dan Magestro (Ohio State Univ.)

Monday 13 Dec 2004, 14:00 → 15:00 Europe/Zurich

160/1-009 (CERN)

The study of azimuthal correlations of high-pt hadrons with STAR has yielded a series of insights that support the jet quenching picture: suppression of the back-to-back jet correlation in central Au+Au collisions, lack of suppression due to initial-state effects in d+Au, and sensitivity of the amount of suppression to the collision geometry in non-central Au+Au. Recent PHENIX studies have shown weak dependence of the correlation on leading baryon vs. meson. While most studies have focused primarily on the back-to-back correlation, small-angle correlations have the potential for exploring the effect of the medium on the near side jet.

I will present an overview of high-pT correlation results at RHIC, emphasizing new studies by STAR of the near-side correlation in pseudorapidity in p+p, d+Au and Au+Au. These studies support the picture that the hard-scattered parton on the near side couples to the hot, expanding medium in a characteristic way.



Organiser(s): Yiota Foka and Urs Achim Wiedemann
More information: http://home.cern.ch/a/alicedoc/www/chic/

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