The 5th Asian Triangle Heavy Ion Conference (ATHIC2014)

Session

Collective dynamics

6 Aug 2014, 14:00

Osaka Univiersity

13. Collectivity in p+p, p+A and A+A collisions from parton scatterings

Guo-Liang Ma (Shanghai INstitute of Applied Physics (SINAP), CAS)

06/08/2014, 14:00

parallel

We show that the incoherent elastic scattering of partons, as present in a multi-phase transport model (AMPT), with a modest parton-parton cross-section of $\sigma=1.5-3$ mb, naturally explains the long-range two-particle azimuthal correlation as observed in proton-proton, proton-nucleus and nucleus-nucleus collisions at the Large Hadron Collider. We calculate the elliptic, $v_2$, and...

60. Entropy fluctuation from hydrodynamic noise

Mr Ryuichi Kurita (the Univ. of Tokyo, RIKEN, Sophia Univ.)

06/08/2014, 14:20

parallel

In the hot and dense QCD matter, quarks and gluons are deconfined to form Quark-Gluon Plasma (QGP). The QGP, which existed in the early universe, can be created experimentally by the relativistic heavy ion collisions at RHIC and LHC. The dynamics of the QGP in these experiments is well described by relativistic hydrodynamics. Recently event-by-event initial fluctuations have been included in...

66. Higher harmonics from causal hydrodynamic fluctuation

Koichi Murase (The University of Tokyo)

06/08/2014, 14:40

parallel

The hydrodynamic fluctuations are thermal fluctuations arising in the event-by-event hydrodynamic evoluation of the system, and its power spectrum is determined through the fluctuation-dissipation relation. While, the higher harmonics $v_n$ are systematically observed in RHIC and LHC and attract a lot of theoretical and experimental interests. Initial state fluctuations turned out to be...

67. Charged hadron flow in Cu+Au collisions at RHIC-PHENIX

Mr Hiroshi Nakagomi (University of Tsukuba)

06/08/2014, 15:00

parallel

Quark Gluon Plasma(QGP) is a phase of nuclear matter at high temperature and high energy density. And this is experimentally formed by relativistic nucleus collisions at RHIC. Flow measurements played an important role in understanding basic properties of QGP , because it reflects the initial spatial anisotropy. In 2012, Cu+Au collisions, the first asymmetric collisions of heavy...

62. Measurement of direct photon collective flow in Au+Au $\sqrt{s_{NN}}$=200GeV collisions at RHIC-PHENIX experiment

Mr Sanshiro Mizuno (University of Tsukuba, RIKEN (JP))

06/08/2014, 15:20

parallel

Due to small cross section in the QGP direct photons preserve information about different stages of the heavy ion collisions. Therefore, detailed measurement of direct photons can be considered as a powerful probe to study QGP physics. Photons have different angular emission patterns depending on their production mechanism. The second order azimuthal anisotropy ($v_{2}$) of direct photons...