Can quarkonia survive deconfinement

By Á. Ḿocsy, P. Petreczky. 2007

143 citations recorded by the source corpus.

We study quarkonium correlators and spectral functions at zero and finite temperature in QCD with only heavy quarks using potential models combined with perturbative QCD. First, we show that this approach can describe the quarkonium correlation function at zero temperature. Using a class of screened potentials based on lattice calculations of the static quark-antiquark free energy we calculate spectral functions at finite temperature. We find that all quarkonium states, with the exception of the 1S bottomonium, dissolve in the deconfined phase at temperatures smaller than 1.5T{sub c}, in contradiction with the conclusions of recent studies. Despite this the temperature dependence of the quarkonium correlation functions calculated on the lattice is well reproduced in our model. We also find that even in the absence of resonances the spectral function at high temperatures is significantly enhanced over the spectral function corresponding to free quark-antiquark propagation.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/03b077da335fffe780331936bf2c67470beb83d8

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In Nuclear and High Energy Physics

1. S. Gubser
2. T. Schaefer
3. J. Stachel
4. P. Braun-Munzinger
5. V. Koch
6. J. Casalderrey-Solana
7. D. Mateos
8. R. Rapp

Citations in the corpus

• Extraction of heavy-flavor transport coefficients in QCD matter (2018, background): “Due to the fact the the temporal meson correlators are defined only for Euclidean time separation τ < 1/(2T ) there is a limited sensitivity to the in-medium modification of the spectral functions [86, 107, 126].”
• Properties of hot and dense matter from relativistic heavy ion collisions (2015, background): “Discriminating between the two pictures of disintegration and regeneration of charmonia in the QGP versus that of assembly of charmonia from deconfined charm quarks at the phase boundary (statistical hadronization) will shed light on fundamental questions connected with the fate of bound states in a”
• Gauge/String Duality, Hot QCD and Heavy Ion Collisions (2011, background): “[247,248] to conclude that the J/ψ and ηc dissociate by T ∼ 1.”
• Thermal bottomonium suppression at RHIC and LHC (2011, unknown): “Using such non-relativistic potential models studies of quarkonium spectral functions and meson current correlators have been performed [13–19].”