Charmonium spectroscopy with optimal distillation profiles

Author:

Juan Andrés Urrea-Niño, Jacob Finkenrath, Roman Höllwieser, Francesco Knechtli, Tomasz Korzec, Michael Peardon

Keyword:

High Energy Physics - Lattice, High Energy Physics - Lattice (hep-lat)

journal:

date:

2023-12-27 00:00:00

Abstract

We use the method of optimal distillation profiles to compute the low-lying charmonium spectrum in an $N_f = 3+1$ ensemble at the $SU(3)$ light flavor symmetric point ($m_{\pi} \approx 420$ MeV), physical charm quark mass and lattice spacing $a\approx 0.0429$ fm. The spectrum and mass splittings display good agreement with their values in nature and the statistical errors are comparable, if not smaller, than those of state-of-the-art lattice calculations. We also present first results on the mixing of charmonium with glueballs and light hadrons obtained in a similar $N_f = 3+1$ ensemble but at larger pion mass.

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