Strangeness in Quark Matter 2016

Higher order flow harmonics and its correlations in 2.76A TeV Pb+Pb collisions

30 Jun 2016, 11:00

20m

102 (Clark Kerr Campus)

Contributed Talk Flow

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 $S{C}^v(3,2)$ and $S{C}^v(4,2)$, 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 $S{C}^v(5,2)$, $S{C}^v(4,3)$ and $S{C}^v(5,3)$, 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

Presentation materials

2016-06-SQM-HuichaoSong2.pdf

2016-06-SQM-HuichaoSong2.pptx

Peer reviewing

Paper

Accepted on 25 Oct 2016 by Jochen Thaeder

vmvn-revisedv1.pdf