Speaker
Ludmila Levkova
(University of Utah)
Description
We report our final results for the contributions of the
disconnected diagrams to the hyperfine splitting in charmonium.
Our study includes both the quenched and dynamical cases
on ensembles with lattice spacings of approximately 0.06 fm and 0.09 fm.
Our new approach tunes the charm quark mass so that the rest mass of the $\eta_c$
is close to its physical value. This method of tuning
gives a better accounting of the glueball interactions contributing to the mass
shift of the $\eta_c$ and $J/\psi$.
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Primary authors
Prof.
Carleton DeTar
(University of Utah)
Ludmila Levkova
(University of Utah)
