We present results for the mass splittings of low-lying charmonium states from a calculation with Wilson clover valence quarks with the Fermilab interpretation on an asqtad sea. We use five lattice spacings and two values of the light sea quark mass to extrapolate our results to the physical point. Sources of systematic uncertainty in our calculation are discussed and we compare our results for the 1S hyperfine splitting, the 1P-1S splitting and the P-wave spin orbit and tensor splittings to experiment.
@article{arxiv.1412.1057,
title = {Low lying charmonium states at the physical point},
author = {Daniel Mohler and Carleton DeTar and Andreas S. Kronfeld and Song-haeng Lee and Ludmila Levkova and J. N. Simone},
journal= {arXiv preprint arXiv:1412.1057},
year = {2014}
}
Comments
For the Fermilab Lattice and MILC Collaborations; 7 pages, 6 figures; Contribution to the 32nd International Symposium on Lattice Field Theory, 23-28 June, 2014, Columbia University New York, NY