Using the -meson elliptic flow to map the strength of partonic interaction
arXiv:1403.2479 · doi:10.1103/PhysRevC.89.034909
Abstract
A compilation of recently measured STAR data for elliptic flow () of mesons in RHIC Beam Energy Scan program and comparison with a multiphase transport model (AMPT) has been presented. The experimental data at 19.6 GeV agrees well with string melting version of the AMPT model. The model includes partonic interactions and quark coalescence as a mechanism of hadronization. This indicates that there is a substantial contribution to collectivity from partonic interactions at 19.6 GeV. The measured -meson at = 7.7 and 11.5 GeV are found to be smaller than those obtained from AMPT model without partonic interactions. This indicates negligible contribution of partonic collectivity to the observed -meson at 11.5 GeV.
arXiv comment5 pages, 3 figures, accepted for publication as a Regular Article in Physical Review C
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- Elliptic flow of -meson at intermediate : Influence of mass versus quark number