Speaker
Gunnar Bali
(University of Regensburg)
Description
The masses of the lowest charmonium states are determined on a large set of coordinated lattice simulations (CLS) gauge ensembles with $N_f=2+1$ sea quark flavours of non-perturbatively improved Wilson fermions. The inverse lattice spacing is varied from about 2 GeV up to more than 5 GeV, enabling a controlled continuum limit extrapolation. This allows the impact of the neglected charm quark annihilation diagrams and the electromagnetic interaction to be assessed.
Primary authors
Gunnar Bali
(University of Regensburg)
Sara Collins
(University of Regensburg)
Sebastian Spiegel
(Universität Regensburg)
Wolfgang Soeldner
(Regensburg University)
