# Quark Matter 2012

12-18 August 2012
US/Eastern timezone

## Study of identified particle higher harmonics azimuthal anisotropy in 200GeV Au+Au collisions at RHIC-PHENIX experiment

16 Aug 2012, 16:00
2h

Poster Global and collective dynamics

### Speaker

Sanshiro for the PHENIX experiments Mizuno (University of Tsukuba, RIKEN (JP))

### Description

Azimuthal anisotropy and particle species dependence of transverse momentum distribution have been studied actively because they reveal information about the QGP generated in high energy heavy ion collisions. From the study of elliptic event anisotropy v_{2}, we have understood that azimuthal anisotropy is generated by initial participant geometry, with a role for the QGP property $\eta$/s (the ratio of shear viscosity($\eta$) to entropy density(s)). In recent years, higher harmonics azimuthal anisotropies v_{n$\ge$3} are in focus because they are expected to be more sensitive to initial participant geometry and $\eta$/s than will be v_{2}. The observed similarities and differences of identified particles v_{3}, v_{4} and v_{2} will be shown and discussed. The freeze-parameters such as freeze-out geometry and expansion velocity as well as temperature at the freeze-out will also be extracted based on the Blast-Wave model and compared with other measurements like HBT and spectra.

### Primary author

Sanshiro for the PHENIX experiments Mizuno (University of Tsukuba, RIKEN (JP))

 Poster