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arXiv · 2502.04977

Flavor mixing in charmonium and light mesons with optimal distillation profiles

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

We study the light meson - charmonium - glueball mixing using flavor-singlet meson operators built from optimal distillation profiles together with purely gluonic operators in different $J^{PC}$ channels at two different pion masses ($\approx$ $420$, $800$ MeV) in two $N_{\rm f} = 3 + 1$ ensembles at close to physical charm quark mass. We observe non-zero mixing correlations between the different types of operators and quantify the overlaps between states created by them and the energy eigenstates by means of a GEVP formulation. We are particularly interested in the scalar glueball and its possible decay into two pions so we also include two-pion operators in our calculation.

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Juan Andrés Urrea-Niño, Jacob Finkenrath, Roman Höllwieser, Francesco Knechtli, Tomasz Korzec, Michael Peardon. 2025-02-07. Flavor mixing in charmonium and light mesons with optimal distillation profiles. https://arxiv.org/abs/2502.04977

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