Lattice QCD simulations are now reaching a precision where electromagnetic corrections from QED become important. In investigating the effects of SU(3) breaking due to quark mass differences within QCD, a group-theoretical analysis of the mass dependence greatly helped us organize our results. We now do the same with electromagnetic charge effects by extending the calculations to dynamical 1+1+1 flavor QCD + QED.
@article{arxiv.1311.4554,
title = {Electromagnetic splitting of quark and pseudoscalar meson masses from dynamical QCD + QED},
author = {R. Horsley and Y. Nakamura and D. Pleiter and P. E. L. Rakow and G. Schierholz and H. Stüben and R. D. Young and J. M. Zanotti},
journal= {arXiv preprint arXiv:1311.4554},
year = {2014}
}
Comments
7 pages, 3 figures, presented at the 31st International Symposium on Lattice Field Theory (Lattice 2013), 29 July - 3 August 2013, Mainz, Germany