# Quark Matter 2012

12-18 August 2012
US/Eastern timezone

## Measurements of anisotropic flow($v_n$, n=1,2,3,4) in Cu + Au collisions at 200 GeV from PHENIX

16 Aug 2012, 16:00
2h

Poster Global and collective dynamics

### Speaker

Dr shengli huang (PHENIX Collaboration)

### Description

Measurements of the anisotropic flow with different order harmonic coefficients ($v_n$, n=1,2,3,4) have played a pivotal role in the discovery of the strongly coupled quark-gluon plasma (sQGP) at RHIC. They are also important for the study of the viscous hydrodynamics and the extraction of the shear viscosity over entropy density ($\eta/s$). The anisotropic flow is strongly coupled with the medium density, initial geometry shape, and corresponding event-by-event fluctuation. All of these elements will come into play in a new way with the availability of Cu+Au collisions at RHIC. The flexibility of RHIC to collide asymmetric nuclei such as Cu + Au at 200 GeV can provide an asymmetric geometry and density both in the transverse plane and longitude, and therefore open a window to investigate the influence from initial geometry and density. It will also help us to probe the different hydrodynamics models and collision models and their properties. In this poster, I will present the work in progress for measuring the correlation between the different $v_n$ planes, from fast production data. Progress for the measurements of charged hadron $v_n$ as a function of centrality, transverse momentum and rapidity will also be presented.

### Primary author

Dr shengli huang (PHENIX Collaboration)

 Poster