One fluid might not rule them all
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One fluid might not rule them all. / Zhou, You; Zhao, Wenbin; Murase, Koichi; Song, Huichao.
I: Nuclear Physics A, Bind 1005, 121908, 01.01.2021.Publikation: Bidrag til tidsskrift › Konferenceartikel › Forskning › fagfællebedømt
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TY - GEN
T1 - One fluid might not rule them all
AU - Zhou, You
AU - Zhao, Wenbin
AU - Murase, Koichi
AU - Song, Huichao
PY - 2021/1/1
Y1 - 2021/1/1
N2 - In this proceeding, we present our recent investigations on hydrodynamic collectivity in high-multiplicity proton-proton collisions at root s = 13 TeV using the iEBE-VISHNU hybrid model with different initial condition models, called HIJING, super-MC and TRENTo. We find that with carefully tuned parameters, hydrodynamic simulations can give reasonable descriptions of the measured two-particle correlations. However, multi-particle single and mixed harmonics cumulants can not be described by hydrodynamics with these three initial conditions, even for the signs in a few cases. Further studies show that the non-linear response plays an important role in the hydrodynamic expansion of the p-p systems. Such an effect can change c(2){4} from a negative value in the initial state to a positive value in the final state. The failure of the hydrodynamic description of multi-particle cumulant triggers the questions on whether the hydrodynamics can rule all collision systems, including p-p collisions at the LHC.
AB - In this proceeding, we present our recent investigations on hydrodynamic collectivity in high-multiplicity proton-proton collisions at root s = 13 TeV using the iEBE-VISHNU hybrid model with different initial condition models, called HIJING, super-MC and TRENTo. We find that with carefully tuned parameters, hydrodynamic simulations can give reasonable descriptions of the measured two-particle correlations. However, multi-particle single and mixed harmonics cumulants can not be described by hydrodynamics with these three initial conditions, even for the signs in a few cases. Further studies show that the non-linear response plays an important role in the hydrodynamic expansion of the p-p systems. Such an effect can change c(2){4} from a negative value in the initial state to a positive value in the final state. The failure of the hydrodynamic description of multi-particle cumulant triggers the questions on whether the hydrodynamics can rule all collision systems, including p-p collisions at the LHC.
KW - hydrodynamics
KW - flow
KW - proton-proton collisions
KW - COLLECTIVITY
KW - COLLISIONS
U2 - 10.1016/j.nuclphysa.2020.121908
DO - 10.1016/j.nuclphysa.2020.121908
M3 - Conference article
VL - 1005
JO - Nuclear Physics A: Nuclear and Hadronic Physics
JF - Nuclear Physics A: Nuclear and Hadronic Physics
SN - 0375-9474
M1 - 121908
T2 - 28th International Conference on Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter)
Y2 - 4 November 2019 through 9 November 2019
ER -
ID: 256623147