Generation of higher flow harmonics in Pb+Pb collisions at LHC in HYDJET++ model

B. H. Brusheim Johansson; L. V. Bravina; G. Kh. Eyyubova; V. L. Khoroktikh; I. P. Lokhtin; L. V. Malinina; S. P. Petrushanko; A. M. Snigirev; E. E. Zabrodin

doi:10.1051/epjconf/20159505004

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Open Access

EPJ Web of Conferences 95, 05004 (2015)
https://doi.org/10.1051/epjconf/20159505004

Generation of higher flow harmonics in Pb+Pb collisions at LHC in HYDJET++ model

B. H. Brusheim Johansson¹^a, L. V. Bravina¹^b, G. Kh. Eyyubova²^c, V. L. Khoroktikh²^d, I. P. Lokhtin²^e, L. V. Malinina²^f, S. P. Petrushanko²^g, A. M. Snigirev²^h and E. E. Zabrodin¹^,2ⁱ

¹ Department of Physics, University of Oslo, Pb. 1048 Blindern, N-0316 Oslo, Norway
² Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University, RU-119991 Moscow, Russia

^a e-mail: bhjohan@uio.no
^b e-mail: larissa.bravina@fys.uio.no
^c e-mail: eyyubova@mail.cern.ch
^d e-mail: vlk@lav1.npi.msu.su
^e e-mail: Lokhtin@cern.ch
^f e-mail: malinina@lav01.sinp.msu.ru
^g e-mail: petrushanko@lav01.sinp.msu.ru
^h e-mail: snigirev@lav.npi.msu.su
ⁱ e-mail: Zabrodin@fys.uio.no

Published online: 29 May 2015

Abstract

The influence of elliptic and triangular flow on higher flow harmonics is studied within the HYDJET++ model, which merges parametrized hydro with jet quenching. Even harmonics can be generated by elliptic flow only, while odd harmonics need nonzero triangular component. A hydrodynamical model predicts a scaling of υ₄/υ₂² ratio with p_T, while jets force a rise of the high p_T tail of the ratio. Hexagonal flow appears to be an interesting interplay between υ₂ and υ₃. It shows a dominant contribution of υ₃ in central events and υ₂ at more peripheral collisions. Comparison with ALICE, ATLAS and CMS experimental data is presented.

© Owned by the authors, published by EDP Sciences, 2015

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