Speaker
Laure MASSACRIER
(Subatech Nantes)
Description
J/psi suppression induced by color screening of its constituents quarks was proposed 26 years ago as a signature of the formation of a quark gluon plasma in heavy-ion collisions. Recent results from ALICE in Pb-Pb collisions exhibit a smaller suppression with respect to SPS and RHIC previous measurements. The study of azimuthal anisotropy in particle production gives information on the collective hydrodynamic expansion of the QGP. In particular, J/psi elliptic flow v2 is important to test the degree of thermalization of particles containing heavy quarks. Together with the production yields, the elliptic flow is a powerful observable to address the question of suppression and regeneration of J/psi in QGP.
We present the first J/psi elliptic flow measurement obtained at forward rapidity and in the low transverse momentum region. v2 is measured as a function of transverse momentum and as a function of rapidity in mid-central collisions. Comparison with recent STAR results is performed.
Primary author
Laure MASSACRIER
(Subatech Nantes)
