Systematic Study of Elliptic Flow at RHIC-PHENIX

In non-central high energy heavy ion collisions, the initial spatial anisotropy is transferred to the final momentum anisotropy due to a pressure gradient in the collision participants, pT and centrality dependences of the azimuthal anisotropy (n2) are measured for charged hadrons in different energ...

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Bibliographic Details
Main Author: Shimomura, Maya
Format: Conference Proceeding
Language:English
Subjects:
ANISOTROPY
BROOKHAVEN RHIC
HADRONS
HEAVY ION REACTIONS
HYDRODYNAMIC MODEL
MULTIPARTICLE SPECTROMETERS
MULTIPLE PRODUCTION
PARTICLE IDENTIFICATION
PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
PRESSURE GRADIENTS
QUARK MATTER
QUARKS
TRANSVERSE MOMENTUM
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Summary:In non-central high energy heavy ion collisions, the initial spatial anisotropy is transferred to the final momentum anisotropy due to a pressure gradient in the collision participants, pT and centrality dependences of the azimuthal anisotropy (n2) are measured for charged hadrons in different energies and collision systems by the PHENIX experiment at RHIC. It was newly found that n2 divided by the geometrical participant eccentricity is exponentially increasing with the number of the participants to the 1/3, and there is the universal scaling for n2 with different energies and collision sizes with eccentricity and number of quark scalings. The results indicate that n2 is not only determinated by the geometrical eccentricity, but 2 is evolving during the finite time which could be related to the size of collisions.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.3122159