High-pT hadron spectra, azimuthal anisotropy and back-to-back correlations in high-energy heavy-ion collisions
Abstract
The observed suppression of high-pT hadron spectra, finite azimuthal anisotropy, disappearance of jet-like back-to-back correlations, and their centrality dependence in Au+Au collisions at RHIC are shown to be quantitatively described by jet quenching within a pQCD parton model. The difference between h± and π0 suppression in intermediate pT is consistent with the observed (K+p)/π enhancement which should disappear at pT>6 GeV/c. The suppression of back-to-back correlations is shown to be directly related to the medium modification of jet fragmentation functions (FF) similar to direct-photon triggered FF's.
- Publication:
-
Physics Letters B
- Pub Date:
- August 2004
- DOI:
- 10.1016/j.physletb.2004.05.021
- arXiv:
- arXiv:nucl-th/0305010
- Bibcode:
- 2004PhLB..595..165W
- Keywords:
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- Nuclear Theory;
- High Energy Physics - Phenomenology
- E-Print:
- 4 pages in RevTex with 4 figures, some typos corrected in the last version