Speaker
Haojie Xu
(Peking University)
Description
In this talk, we present our recent investigations on the higher order flow harmonics in 2.76A TeV Pb+Pb collisions using the iEBE-VISHNU hybrid model.
(1). Using iEBE-VISHNU model with AMPT initial conditions, we calculate the higher order flow harmonics of identified hadrons in 2.76A TeV Pb+Pb collisions. Our model calculations generally reproduce the recent ALICE data on higher order flow harmonics, which shows a similar mass ordering of $v_{3}(p_{T})$ and $v_{4}(p_{T})$ as one observed in $v_{2}(p_{T})$.
We also explore the development of $v_{n}$ mass ordering during the hadronic evolution through the comparison runs from iEBE-VISHNU hybrid model and pure hydrodynamics with different decoupling temperatures.
(2). Using iEBE-VISH2+1 model, we investigate the correlations between different order flow harmonics in Pb+Pb collisions at 2.76A TeV. Comparisons between hydrodynamic calculations and the experimental measurements from ALICE Collaboration show that hydrodynamics can qualitatively describe the data on $SC^{v}(3,2)$ and $SC^{v}(4,2)$, which indicate the $v_{2}$ and $v_{3}$ are anti-correlated, and the $v_{2}$ and $v_{4}$ are correlated. We also predict other correlation of flow harmonics $SC^{v}(5,2)$, $SC^{v}(4,3)$ and $SC^{v}(5,3)$, and propose some other observables, such as the normalized symmetric cumulants $NSC(m,n)$, the Pearson correlation coefficients $C(v_{m}^{2},v_{n}^{2})$, and discuss their dependences on the different initial scenarios (Monte Carlo Glauber, Monte Carlo KLN and AMPT) and shear viscosities.
References:
[1]. HJX, Zhuopeng Li, Huichao Song High order flow harmonics of identified hadrons in 2.76 A TeV Pb+Pb collisions, arXiv.1602.02029
[2]. Xiangrong Zhu, You Zhou, HJX, Huichao Song, Correlations of event-by-event flow harmonics in 2.76A TeV Pb–Pb collision, in prepare
| On behalf of collaboration: | None |
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Author
Haojie Xu
(Peking University)
Co-author
Huichao Song
