Speaker
Dr
Ionut Cristian Arsene
(University of Oslo)
Description
The hot and dense nuclear matter created in heavy ion collisions at relativistic energies consists in its early stage
of a plasma of deconfined quarks and gluons (QGP).
Charmonium production is a very sensitive probe to both the conditions of the QGP medium, such as energy density and temperature,
and to non-medium conditions like total charm cross-section production and cold nuclear matter (CNM) effects.
The strong J/psi suppression observed in central
nucleus-nucleus collisions at RHIC and SPS has been
proposed as evidence for the QCD analogue of the Debye screening effect. At the LHC, the wealth of results available for Pb-Pb collisions
at 2.76 TeV per nucleon suggests that the formation of charmonium via quark (re)combination in medium or at the
chemical freeze-out gives a significant contribution to the total yields. The recent p-Pb results on charmonium production allows
for an estimation of the CNM effects which strenghtens the support for models including the (re)combination effect
in Pb-Pb collisions.
Covering a large rapidity range (|y|<0.9 and 2.5
Primary author
Dr
Ionut Cristian Arsene
(University of Oslo)
