Non-linear flow modes of identified particles in Pb–Pb collisions at √sNN = 5.02 TeV with the ALICE detector
Abstract
The non-linear flow modes, v(4,22), v(5,32) and v(6,33) as a function of
transverse momentum (p(T)) have been measured for the first time in
Pb-Pb collisions at root s(NN) = 5.02 TeV for identified particles, i.e.
charged pions, kaons and (anti-)protons. These observables probe the
contribution of the second and third initial anisotropy coefficients to
the higher order flow harmonics. Interestingly, all the characteristic
features observed in previous p(T)-differential as well as
p(T)-integrated measurements (e.g. v(2) and v(3)) for various particle
species are present in these measurements, i.e. increase of magnitude
with increasing centrality percentile, a mass ordering in the low p(T)
region and a particle type grouping in the intermediate p(T) region. The
results cover 0-1\% (ultra-central collisions), 10-20\% (mid-central
collisions) and 40-50\% (mid-peripheral collisions) centrality intervals
and allow to test models that attempt to describe initial conditions and
the mode-coupling of different harmonics.
Collections

DSpace@Karatay by Karatay University Institutional Repository is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 Unported License..