Charmonium spectra at finite temperature from QCD sum rules with the maximum entropy method

Details Charmonium spectra at finite temperature from QCD sum rules with the maximum entropy method Charmonium spectra at finite temperature from QCD sum rules with the maximum entropy method

2011-04-22

arxiv.org/abs/1104.4436v2

Phys.Rev.Lett.107,092003,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 figure; typos corrected, version published in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.107.092003

Charmonia spectral functions at finite temperature are studied using QCD sum rules in combination with the maximum entropy method. This approach enables us to directly obtain the spectral function from the sum rules, without having to introduce any specific assumption about its functional form. As a result, it is found that while J/psi and eta_c manifest themselves as significant peaks in the spectral function below the deconfinement temperature T_c, they quickly dissolve into the continuum and almost completely disappear at temperatures between 1.0 T_c and 1.1 T_c.

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