Speaker
Description
Elliptic $\varepsilon_2$ and triangular $\varepsilon_3$ eccentricities
arising in initial state of relativistic heavy-ion collisions are
studied within the framework of a geometrical model with event-by-event
fluctuations. Elliptic eccentricity is shown to be determined mainly
by the average collision geometry, whereas the triangular one is
related merely to the fluctuations. Assuming the linear dependence of
the second $v_2$, and third, $v_3$, harmonics of anisotropic flow on
$\varepsilon_2$ and $\varepsilon_3$, respectively, the model provides
a fair description of the ALICE results for Pb+Pb collisions at
$\sqrt{s_{NN}} = 5.02$ TeV. Similar to spatial eccentricities, elliptic
flow weakly depends on the fluctuations everywhere but in very central
collisions, while triangular flow is mostly determined by the
event-by-event fluctuations. For the collisions with centrality 0-2\%
a novel scaling dependence for the magnitudes of the flow harmonics
$v_n$ on atomic number $A$, $v_n \propto A^{-1/3}$, is predicted.
This prediction agrees well with the available experimental data.
Details
Dr. Evgeny Zabrodin, University of Oslo (Norway) and Moscow State University (Russia)
| Is this abstract from experiment? | No |
|---|---|
| Name of experiment and experimental site | N/A |
| Is the speaker for that presentation defined? | Yes |
| Internet talk | Maybe |
