Speaker
Maowu Nie
(Shanghai Institute of Applied Physics (SINAP))
Description
Azimuthal anisotropies of reconstructed jets [$v_{jet}^{n} (n = 2,3)$] have been investigated in Pb + Pb collisions at the center of mass energy $√s_{NN} = 2.76 TeV$ within a framework of a multiphase transport (AMPT) model. The $v_{jet}^{2}$ is in good agreement with the recent ATLAS data. However, the $v_{jet}^{3}$ shows a smaller magnitude than $v_{jet}^{2}$ , and approaches zero at a larger transverse momentum. It is attributed to the path-length dependence in which the jet energy loss fraction depends on the azimuthal angles with respect to different orders of event planes. The ratio $v_{jet}^{n}$ /$ε_{n}$ increases from peripheral to noncentral collisions, and $v_{jet}^{n}$ increases with the initial spatial asymmetry ($ε_n$) for a given centrality bin. These behaviors indicate that the $v_{jet}^{n}$ is produced by the strong interactions between jet and the partonic medium with different initial geometry shapes. Therefore, azimuthal anisotropies of reconstructed jet are proposed as a good probe to study the initial spatial fluctuations, which are expected to provide constraints on the path-length dependence of jet quenching models.
| On behalf of collaboration: | NONE |
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Primary author
Maowu Nie
(Shanghai Institute of Applied Physics (SINAP))
Co-author
Prof.
Guoliang Ma
(SINAP)
