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Measurements of identified particle anisotropic flow in Cu+Au and U+U collisions by PHENIX experiment
- Publication Year :
- 2012
-
Abstract
- In this paper, new measurements of anisotropic flow ($v_{1}$, $v_{2}$) for identified particles such as pions and proton in Cu+Au collisions at 200 GeV and U+U collisions at 193 GeV are reported. The anisotropic flow is studied as a function of $p_{T}$ and centrality in these two collision systems. In ultra-central U+U collisions (0--2% centrality), $v_2$ of protons shows a weak $p_{T}$ dependence for $p_T<$~1.0 GeV/c. A positive $v_1$ for charged pions is observed for $p_{T} >$ 1 GeV/c with respect to the first-order event plane, the angle of which is determined by the Au-going spectators. The scaling of identified particles $v_2$ with the number of valence quarks ($n_q$) has been observed, in different centrality bins, with the transverse kinetic energy in these two collision systems.
- Subjects :
- Nuclear Experiment
Subjects
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1210.5570
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1016/j.nuclphysa.2013.02.038