Elliptic flow of identifed particles in Pb-Pb collisions at the LHC

May 19, 2014, 2:40 PM
20m
europium (darmstadtium)

europium

darmstadtium

Schlossgraben 1 64283 Darmstadt Germany
Contributed Talk Collective Dynamics Collective dynamics

Speaker

Alexandru Florin Dobrin (University of Utrecht (NL))

Description

We report the measurements of elliptic flow for identified particles produced in Pb--Pb collisions at $\sqrt{s_{\rm NN}} = 2.76$ TeV with the ALICE detector at the LHC. The second Fourier coefficient, $v_2$, measured with the scalar product method with a large pseudo-rapidity gap of $|\Delta\eta| > 2.0$, is reported for $\pi$, ${\rm K}^{\pm}$, ${\rm K}^0_s$, p ($\overline{\mathrm{p}}$), $\phi$, $\Lambda$ ($\overline{\mathrm{\Lambda}}$), $\Xi$ and $\Omega$. We will present the transverse momentum $p_{\mathrm{T}}$ dependence of the $v_2$ of each particle for several centrality classes. In the low $p_{\mathrm{T}}$ region ($p_{\mathrm{T}} < 2$ GeV/$c$) our data are described fairly well by hydrodynamical calculations. We will discuss our results in the intermediate $p_{\mathrm{T}}$ region $2 < p_{\mathrm{T}} < 5$ GeV/$c$, where the scaling with the number of constituent quarks was first reported at RHIC energies.
On behalf of collaboration: ALICE

Primary author

Alexandru Florin Dobrin (University of Utrecht (NL))

Presentation materials