Speaker
Prof.
Seyong Kim
(Sejong University)
Description
To study the in-medium modification of quarkonium properties, charmonium correlators at $140.4 (\beta =6.664) \le T \le 221 (\beta = 7.280)$ (MeV) are calculated using the NRQCD formalism on $48^3 \times 12$ gauge configurations with dynamical $N_f = 2 + 1$ flavors of Highly Improved Staggered Quarks (HISQ). To determine the "zero energy shift" for these lattices, we perform a fine zero temperature scan ($\beta =6.664, 6.740, 6.800, 6.880, 6.950, 7.030, 7.150$ and $7.280$). In addition, we investigate the influence of statistical errors on the reconstruction of spectral functions by varying the number of correlators in the study. We find that the temperature dependence of charmonium correlators is stronger than the temperature dependence of bottomonium correlators in a given channel. This fits into the expected pattern of sequential quarkonium melting.
Primary author
Prof.
Seyong Kim
(Sejong University)
Co-authors
Dr
Alexander Rothkopf
(University of Heidelberg)
Dr
Peter Petreczky
(Brookhaven National Laboratory)
