19,043 research outputs found
Searches for dependent fluctuations of flow angle and magnitude in Pb--Pb and p--Pb collisions
Anisotropic azimuthal correlations are used to probe the properties and the
evolution of the system created in heavy-ion collisions. Two-particle azimuthal
correlations were used in the searches of dependent fluctuations of
flow angle and magnitude, measured with the ALICE detector. The comparison of
hydrodynamic calculations with measurements will also be presented in this
proceedings.Comment: 4 pages, 4 figures, Proceedings of XXIV International Conference on
Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2014), May 19-24,
2014, Darmstad
Anisotropic flow measurements in Pb--Pb collisions at 5.02 TeV with ALICE
Anisotropic flow is a sensitive probe of the initial conditions and the
transport properties of the Quark Gluon Plasma (QGP) produced in heavy-ion
collisions. In these proceedings, we present the first results of elliptic
(), triangular () and quadrangular flow () of charged particles
in Pb--Pb collisions at 5.02 TeV with the ALICE
detector. In addition, the comparison of experimental measurements to various
theoretical calculations will be discussed. This provides a unique opportunity
to test the validity of the hydrodynamic picture and discriminates between
various possibilities for the temperature dependence of shear viscosity to
entropy density ratio of the produced QGP.Comment: 4 pages, 3 figures, Proceedings of 16th International Conference on
Strangeness in Quark Matter, Berkele
Anisotropic flow of identified particles in Pb--Pb collisions at 2.76 TeV with the ALICE detector
The measurement of anisotropic flow of identified particles, including
charged pion, kaon, (anti-)proton as well as strange and multi-strange
particles (, , and )
are measured in Pb--Pb collisions at = 2.76 TeV with
the ALICE detector. The results are compared to measurements at RHIC and
hydrodynamic model calculations. The mass splitting and the scaling with the
number of constituent quarks of the anisotropic flow are also discussed.Comment: 4 pages, 5 figures, Proceedings of Strangeness in Quark Matter 2013
(SQM 2013, Birmingham
Review of anisotropic flow correlations in ultrarelativistic heavy-ion collisions
Anisotropic flow phenomena is a key probe of the existence of Quark-Gluon
Plasma. Several new observable associated with correlations between anisotropic
flow harmonics are developed, which are expected to be sensitive to the initial
fluctuations and transport properties of the created matter in heavy ion
collisions. I review recent developments of correlations of anisotropic flow
harmonics. The experimental measurements, together with the comparisons to
theoretical model calculations, open up new opportunities of exploring novel
QCD dynamics in heavy-ion collisions.Comment: 10 pages, 8 figures, 1 table, invited review on the topic of flow
harmonic correlation
Overview of recent azimuthal correlation measurements from ALICE
Azimuthal correlations are a powerful tool to probe the properties and the
evolution of the collision system. In this proceedings, we will review the
recent azimuthal correlation measurements from ALICE at the LHC. The comparison
to other experimental measurements and various theoretical calculations will be
discussed as well.Comment: 12 pages, 9 figures, invited talk in 5th International Conference on
New Frontiers in Physics (6-14 July 2016), Crete, Greec
Probing non-linearity of higher order anisotropic flow in Pb--Pb collisions
The second and the third order anisotropic flow, and , are
determined by the corresponding initial spatial anisotropy coefficients,
and , in the initial density distribution.
On the contrary, the higher order anisotropic flow (), in addition
to their dependence on the same order initial anisotropy coefficient
, have a significant contribution from lower order initial
anisotropy coefficients, which leads to mode-coupling effects. In this
contribution, we present the investigations on linear and non-linear modes in
higher order anisotropic flow (, and ) in Pb--Pb
collisions at 2.76 TeV using the ALICE detector at the
Large Hadron Collider (LHC). A significant contribution from a non-linear mode
is observed. A new observable, the non-linear response coefficient, is measured
as well. The comparison to theoretical calculations provides crucial
information on dynamic of the created system especially at the freeze-out
conditions, which are poorly known from previous flow measurements.Comment: 4 pages, 3 figures, XXVIth International Conference on
Ultrarelativistic Nucleus-Nucleus Collisions (Quark Matter 2017), Chicago, U
- …