Fascinating aspects of the light quark-mass behavior of baryon electromagnetic form factors are highlighted. Using FLIC fermions on 203×40 quenched O(a2)-improved gauge fields, we explore charge radii and magnetic moments at pion masses as light as 300 MeV. Of particular interest is chiral curvature of proton charge radii and magnetic moments, the environmental dependence of strange quark properties in hyperons, and the remarkable signature of quenched chiral-nonanalytic behavior in the magnetic moment of Δ baryon resonances.
@article{arxiv.hep-lat/0611028,
title = {Light quark electromagnetic structure of baryons},
author = {J. N. Hedditch and B. G. Lasscock and D. B. Leinweber and A. G. Williams and J. M. Zanotti and J. B. Zhang},
journal= {arXiv preprint arXiv:hep-lat/0611028},
year = {2010}
}
Comments
7 pages, 6 figures, Presented at the 24th International Symposium on Lattice Field Theory (Lattice 2006), Tucson, Arizona, 23-28 Jul 2006