Parallel Session 3.3: Quarkonia (I)
- Christine Aidala ()
Quarkonium production is an important probe to study the properties of the Quark Gluon Plasma (QGP) formed in relativistic heavy-ion collisions. The suppression of J/ψ due to the color-screening effect in the medium was initially proposed as direct evidence of the QGP formation. However, the interpretation of J/ψ suppression is still challenging due to the regeneration contribution from the...
ALICE at the Large Hadron Collider (LHC) provides unique capabilities
to study charmonium production at low transverse momenta. In the early
and hottest phase of nucleus-nucleus collisions the formation of a
Quark-Gluon Plasma (QGP) is expected. Several QGP induced effects,
such as the melting of charmonium states due to color screening and/or
a (re)combination of uncorrelated charm and...
Charmonium production in PbPb collisions requires the inclusion of many phenomena to be understood, such as melting in the quark gluon plasma and statistical recombination, on top of cold nuclear matter effects (modifications of nPDFs, initial-state energy loss, nuclear break-up), better probed in pPb collisions. Final results on the relative J/$\psi$ and $\psi$(2S) modification, based on the...
The suppression of heavy charmonia states in heavy-ion collisions is a phenomenon understood as a consequence of QGP formation in the hot, dense system formed in heavy ion collisions at the LHC. In addition to hot matter effects in heavy-ion collisions , cold nuclear effects may also affect heavy charmonia production . Therefore, a full assessment requires detailed studies on the effects...
ALICE is the LHC experiment dedicated to the study of ultra relativistic
heavy-ion collisions where the formation of a hot and dense
strongly-interacting medium, a Quark-Gluon Plasma (QGP), is expected.
Considerable theoretical and experimental efforts have been invested in
the last 30 years to study the properties of the QGP. One of the signals
of QGP formation is the charmonium...
For theoretical understanding of quarkonium production in heavy ion collisions
it is important to know the potential between the heavy quark and anti-quark
at non-zero temperature. This potential is complex and provides an efficient
way to calculate quarkonium spectral functions at non-zero temperature and
an important input for dynamical models aiming to describe quarkonium