中文

Directed and Elliptic Flow at RHIC

核实验 2009-11-10 v2

摘要

We present the directed flow measurement (v1v_1) from Au+Au collisions at \sqrtsNN=62\sqrtsNN = 62 GeV. Over the pseudorapidity range we have studied, which covers η\eta from -1.2 to 1.2 and 2.4<η<42.4 < |\eta| < 4, the magnitude of v1v_1 for charged particles is found to increase monotonously with pseudorapidity for all centralities. No ``v1v_1 wiggle'', as predicted by various theoretical models, is observed at midrapidity. Elliptic flow (v2v_2) from moderate high ptp_t particles (36GeV/c3-6 GeV/c) at \sqrtsNN=200\sqrtsNN = 200 GeV is presented as a function of impact parameter. It is found that models that are based on {\it jet quenching} alone appear to underpredict v2v_2 at moderate high ptp_t, while the model that incorporates both, recombination and fragmentation, describes the data better.

关键词

引用

@article{arxiv.nucl-ex/0409029,
  title  = {Directed and Elliptic Flow at RHIC},
  author = {Aihong Tang},
  journal= {arXiv preprint arXiv:nucl-ex/0409029},
  year   = {2009}
}

备注

6 pages, 4 figures. Proceeding for Hot Quark 04 conference Changes in the revision are mostly English fixes. v1 versus eta plot is flipped over to follow the convention