Physical nucleon properties from lattice QCD.
We investigate various resummations of the chiral expansion and fit to the extremely accurate lattice QCD data for the mass of the nucleon recently obtained by the CP-PACS group. Using a variety of finite-range regulators, we demonstrate a remarkably robust chiral extrapolation of the nucleon mass. The systematic error associated with the chiral extrapolation alone is estimated to be less than 1%.
Leinweber
D B
DB
Special Research Center for the Subatomic Structure of Matter and Department of Physics, University of Adelaide, Adelaide SA 5005, Australia.
Thomas
A W
AW
Young
R D
RD