Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2010-12-03
Nucl.Phys.A855:92-100,2011
Physics
Nuclear Physics
Nuclear Experiment
9 pages, 11 figures, Proceedings for the 4th International Conference on Hard and Electromagnetic Probes of High Energy Nuclea
Scientific paper
10.1016/j.nuclphysa.2011.02.024
We review recent progresses on jet quenching measurements by PHENIX. With increased statistics, PHENIX has gone beyond the single hadron suppression $R_{\rm AA}$, and made measurements on multiple jet quenching observables, such as $v_2$, $I_{\rm AA}$ and $v_2^{I_{\rm AA}}$. We argue that, by combining these observables together, one can achieve a better understanding of the energy loss mechanism. We present new $\gamma$-hadron correlation results with associated hadrons extended to low $p_T$; an enhancement has been observed, suggesting a contribution of genuine medium response that is relatively unbiased by the initial geometry fluctuations. The status of full jet reconstruction and future perspective of PHENIX jet quenching program are discussed.
for the PHENIX Collaboration
Jia Jiangyong
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