Hexagonal flow v_6 as a superposition of elliptic v_2 and triangular v_3 flows
Abstract
Partial contributions of elliptic v_2 and triangular v_3 flows to the hexagonal v_6 flow are studied within the HYDJET++ model for Pb+Pb collisions at sqrt{s}=2.76 TeV. Scaling of the ratio v_6^{1/6}{Psi_2} / v_2^{1/2}{Psi_2} in the elliptic flow plane, Psi_2, is predicted in the range 1 < p_T < 4 GeV/c for semicentral and semiperipheral collisions. Jets increase this ratio by about 10% and also cause its rise at p_T > 3.5 GeV/c. The part of v_6 coming from v_2 is instantly increasing as the reaction becomes more peripheral, whereas the contribution of v_3 to v_6 drops. This behavior explains the experimentally observed increase of correlations between second and sixth harmonics and decrease of correlations between third and sixth harmonics with rising impact parameter . Our study favors the idea that basic features of the hexagonal flow can be understood in terms of the interplay of elliptic and triangular flows.
Keywords
Cite
@article{arxiv.1311.0747,
title = {Hexagonal flow v_6 as a superposition of elliptic v_2 and triangular v_3 flows},
author = {L. V. Bravina and B. H. Brusheim Johansson and G. Kh. Eyyubova and V. L. Korotkikh and I. P. Lokhtin and L. V. Malinina and S. V. Petrushanko and A. M. Snigirev and E. E. Zabrodin},
journal= {arXiv preprint arXiv:1311.0747},
year = {2014}
}
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Final version