5-11 February 2017
Hyatt Regency Chicago
America/Chicago timezone

Measurement of the J/$\psi$ elliptic flow at mid-rapidity in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV.

Not scheduled
2h 30m
Hyatt Regency Chicago

Hyatt Regency Chicago

151 East Wacker Drive Chicago, Illinois, USA, 60601
Board: D05

Speaker

Pascal Dillenseger (Johann-Wolfgang-Goethe Univ. (DE))

Description

J/$\psi$ measurements at $\sqrt{s_{\rm NN}}$ = 2.76 TeV Pb$-$Pb collisions clearly show a smaller suppression than the one expected from color screening, when compared to binary-scaled pp collisions. An answer to this behavior is presented by models containing a regeneration component. In these models a possible (re)combination of (un)correlated c$\overline{\rm{c}}$-quarks enhances the J/$\psi$ production.
Since those c$\overline{\rm{c}}$-quarks interact with the bulk medium before forming a J/$\psi$, they should be coupled to the medium flow. Hence the measurement of the elliptic flow ($v_{2}$) for J/$\psi$ imposes strong constraints on the J/$\psi$ production models in high energy Pb$-$Pb collisions.\
The ALICE experiment at the Large Hadron Collider (LHC) is a unique tool to study J/$\psi$. It is able to measure the J/$\psi\rightarrow\rm{e}^{+}\rm{e}^{-}$ decay channel at mid-rapidity ($|y|<0.9$) and down to $p_{\rm{T}}=0$. New preliminary results on the $v_{2}$ of J/$\psi$ measured in the $\rm{e}^{+}\rm{e}^{-}$ decay channel with ALICE in Pb$-$Pb collisions at $\sqrt{s_{\rm NN}}$ = 5.02 TeV will be presented.

Preferred Track Quarkonia
Collaboration ALICE

Primary author

Pascal Dillenseger (Johann-Wolfgang-Goethe Univ. (DE))

Presentation materials