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

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.

9 pages, 6 figures, in Latex

References in corpus (1)

• Fitted HBT radii versus space-time variances in flow-dominated models

Cited by in corpus (8)

• Bulk Viscosity driven clusterization of quark-gluon plasma and early freeze-out in relativistic heavy-ion collisions
• Chaoticity Parameter Lambda in Hanbury-Brown Twiss Interferometry
• Characteristic quantities of pion-emitting sources extracted by model-independent analysis in relativistic heavy ion collisions
• The Kolmogorov-Smirnov test and its use for the identification of fireball fragmentation
• Imaging of granular sources in high energy heavy ion collisions
• Detection of source inhomogeneity through event-by-event two-pion Bose-Einstein correlations
• HBT interferometry with quantum transport of the interfering pair
• Single-Event Handbury-Brown-Twiss Interferometry