Conveners
Parallel Session - Heavy flavor II
- Boris Hippolyte (IPHC / USIAS (Strasbourg, FR))
The experimentally observed dissociation and regeneration of bound quarkonium states in heavy-ion collisions provide a powerful tool to probe the dynamics of the hot, dense plasma. These measurements are sensitive to the effects of color screening, color recombination, and possibly to other, new phenomena affecting dynamics of heavy quarks in the QCD medium. In the large-statistics Run 2...
Heavy quarks are produced at the first instant of a nucleus-nucleus collision and therefore
are an important tool to study the subsequent high energy-density medium formed in
relativistic heavy-ion collisions. Over the last few decades major efforts have been
undertaken in order to understand the properties of the Quark-Gluon Plasma (QGP) using
quarkonia. The extent of medium...
We will present recent results on thermal modifications of heavy quark spectral functions and transport properties based on continuum extrapolated charmonium and bottomonium correlation functions in pure SU(3) plasma, extending the previous study in the pseudoscalar channel to the vector channel. Using the gradient flow technique for the color-electric field correlator on large and fine...
Heavy quarkonia are useful probes of the quark-gluon plasma, where quarkonium dissociation is expected at high enough temperatures. Indeed, such a suppression is clearly present in the latest STAR measurements of $J/\Psi$ production in Au+Au collisions. The suppression is observed to have little dependence on $p_{T}$, although cold nuclear matter effects, such as shadowing, anti-shadowing,...
Nuclear modification of charmonium in small systems is thought to be caused by a combination of initial-state effects in the charm quark production, such as depletion from gluon shadowing and Cronin enhancement, and final-state breakup through comoving particles. The timescale of a charmonium state to neutralize with respect to the duration of the charmonium crossing the nuclear media may also...
Relativistic heavy-ion experiments have observed similar quenching effects for (prompt) $D$ mesons compared to charged hadrons for transverse momenta larger than 6-8 GeV, which remains a mystery since heavy quarks typically lose less energies in quark-gluon plasma than light quarks and gluons. Recent measurements of the nuclear modification factors of $B$ mesons and $B$-decayed $D$ mesons by...
