| Empirical constraints on parton energy loss in nucleus-nucleus collisions at RHIC | |
| Wang, Gang ; Huang, Huan Zhong | |
| 2010-10-12 ; 2010-10-12 | |
| 关键词 | HEAVY-ION COLLISIONS PERTURBATIVE QCD COLLECTIVE FLOW JET TOMOGRAPHY AU COLLISIONS QUARKS Physics, Multidisciplinary |
| 中文摘要 | We present empirical features of parton energy loss in nucleus-nucleus collisions at RHIC through studies of the spectra and nuclear modification factors (R-AA) for charged hadrons, neutral pions (pi(0)) and non-photonic electrons. The flat distribution of RAA at high transverse momentum (PT) for a given collision centrality is consistent with a scenario where parton energy loss APT is proportional to PT. The centrality dependence of the parton energy loss indicates the absence of path length dependence in the magnitude of energy loss. The lack of strong path length dependence suggests a dynamical picture where the dense partonic medium undergoes rapid expansion and the density of the medium falls rapidly in the first a few Fermi interval, which may be much shorter than the full path length. Implications of the empirical constraints on the parton energy loss will also be discussed. Published by Elsevier B.V. |
| 语种 | 英语 ; 英语 |
| 出版者 | ELSEVIER SCIENCE BV ; AMSTERDAM ; PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/78814]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | Wang, Gang,Huang, Huan Zhong. Empirical constraints on parton energy loss in nucleus-nucleus collisions at RHIC[J],2010, 2010. |
| APA | Wang, Gang,&Huang, Huan Zhong.(2010).Empirical constraints on parton energy loss in nucleus-nucleus collisions at RHIC.. |
| MLA | Wang, Gang,et al."Empirical constraints on parton energy loss in nucleus-nucleus collisions at RHIC".(2010). |
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