13,344 research outputs found
Anisotropic distributions in a multi-phase transport model
With A Multi-Phase Transport (AMPT) model we investigate the relation between
the magnitude, fluctuations and correlations of the initial state spatial
anisotropy and the final state anisotropic flow coefficients
in Au+Au collisions at 200 GeV. It is found
that the relative eccentricity fluctuations in AMPT account for the observed
elliptic flow fluctuations, in agreement with measurements of the STAR
collaboration. In addition, the studies based on 2- and multi-particle
correlations and event-by-event distributions of the anisotropies suggest that
the Elliptic-Power function is a promising candidate of the underlying
probability density function of the event-by-event distributions of
as well as . Furthermore, the correlations between
different order symmetry planes and harmonics in the initial coordinate space
and final state momentum space are presented. Non-zero values of these
correlations have been observed. The comparison between our calculations and
data will, in the future, shed new insight into the nature of the fluctuations
of the Quark-Gluon Plasma produced in heavy ion collisions.Comment: 10 pages, 8 figures, accepted by PR
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