Latest results of charged hadron flow measurements in CuAu collisions at RHIC-PHENIX

32nd Winter Workshop on Nuclear Dynamics

Nakagomi, Hiroshi^1

University of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki, Japan^1

关键词: Anisotropic flows;    Charged hadrons;    Empirical scaling;    Measurements of;    Mid-rapidity;    Negative values;    Relativistic Heavy Ion Collider;    Transverse momenta;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/736/1/012015/pdf
DOI  :  10.1088/1742-6596/736/1/012015

来源: IOP

【 摘 要 】

Measurements of azimuthal anisotropic flow vnfor inclusive charged hadrons and identified particles at mid rapidity in Cu+Au collisions at √sNN= 200GeV are presented. The data were recorded by the PHENIX experiment at Relativistic Heavy Ion Collider(RHIC). Directed, elliptic and triangular flow as a function of transverse momentum pTare measured with respect to event planes. The inclusive charged hadron vi shows the negative value at high pT. The v2and v3are compared to those in Au+Au and Cu+Cu collisions. We find the v2and v3follow an empirical scaling with 1/(nN1/3part). We also compare the v2and v3to hydrodynamical predictions. The identified particles v2and v3show a mass ordering in low pTregion and baryon and meson splitting in high pTregion. However the identified hadron v1only shows mass ordering in mid pTregion.