Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-06-09
Phys.Rev. C74 (2006) 024908
Physics
High Energy Physics
High Energy Physics - Phenomenology
9 pages, 6 figures, in Latex
Scientific paper
10.1103/PhysRevC.74.024908
In many simulations of high-energy heavy-ion collisions on an event-by-event analysis, it is known that the initial energy density distribution in the transverse plane is highly fluctuating. Subsequent longitudinal expansion will lead to many longitudinal tubes of quark-gluon plasma which have tendencies to break up into many spherical droplets because of sausage instabilities. We are therefore motivated to use a model of quark-gluon plasma granular droplets that evolve hydrodynamically to investigate pion elliptic flows and Hanbury-Brown-Twiss interferometry. We find that the data of pion transverse momentum spectra, elliptic flows, and HBT radii in \sqrt{s_{NN}}=200 GeV Au + Au collisions at RHIC can be described well by an expanding source of granular droplets with an anisotropic velocity distribution.
Ren Yan-Yu
Wong Cheuk-Yin
Zhang Wei-Ning
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