Statistical hadronization of heavy quarks in ultra-relativistic nucleus–nucleus collisions

By A. Andronic, P. Braun-Munzinger, K. Redlich, J. Stachel. 2006

179 citations recorded by the source corpus.

Abstract We present new results on the statistical hadronization of heavy quarks at SPS, RHIC and LHC energies. Several new aspects are considered, among them a separation of the collision geometry into a “core” and a “corona” part and an estimate of the annihilation rate of charm quark in a hot plasma, together with a critical assessment of its influence on the results. For RHIC energies we investigate the centrality dependence of J / ψ production focusing on the model results for different values of the charm production cross section, including its theoretical and experimental uncertainty. We also study, within this model, the rapidity dependence of the J / ψ yield. Recent RHIC data from the PHENIX experiment are well reproduced. At LHC energy, we update our model predictions for the centrality dependence of the J / ψ yield and investigate as well the rapidity dependence. We also discuss the transverse momentum distributions of J / ψ mesons expected from the model and provide predictions for a range of values of the expansion velocity at chemical freeze-out. Finally, we extend the model to predict ϒ yields in Pb + Pb collisions at LHC energy.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/447290656dfb14f4ec92a8d65f05878d4f4cfb52

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In Nuclear and High Energy Physics

Citations in the corpus

Heavy-flavour and quarkonium production in the LHC era: from proton–proton to heavy-ion collisions (2015, methodology): “In order to treat properly the centrality dependence, also production in the dilute corona using the pp production cross section of J/ψ is considered [712, 713].”
Heavy quarkonium in extreme conditions (2019, background): “[335] at SPS gc ≲ 5 while at RHIC it is already gc ≈ 10 and for LHC it takes on even larger values 17 < gc < 30.”
Properties of hot and dense matter from relativistic heavy ion collisions (2015, methodology): “At chemical freeze-out, which for small enough values of μb (say below 100 MeV) closely coincides with hadronization, as discussed in Section 3, these thermalized charm quarks form hadrons with heavy quarks; their yields are determined by thermal weights equivalent to those used in the description o”
Multiplicity dependence of light-flavor hadron production in pp collisions at √s = 7 TeV (2019, result): “Furthermore, the size of the correlation window is also compatible with similar estimates for charm production [71, 72].”
Extraction of heavy-flavor transport coefficients in QCD matter (2018, background): “The main idea is [60, 75, 76] that the well-established enhancement of strange quarks in URHICs, relative to pp collisions, will increase the yields and quantitatively affect the pT spectra and elliptic flow of the charm-strange mesons in the presence of recombination of charm quarks within a heat b”