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Analysis of pion elliptic flows and HBT interferometry in a granular quark-gluon plasma droplet model

Wei-Ning Zhang·Yan-Yu Ren·Cheuk-Yin Wong
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Abstract

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.

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Wei-Ning Zhang, Yan-Yu Ren, Cheuk-Yin Wong. 2006-06-09. Analysis of pion elliptic flows and HBT interferometry in a granular quark-gluon plasma droplet model. https://doi.org/10.1103/physrevc.74.024908

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