Dynamical quark effects on light quark masses.
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00014502
p4674_1.pdf 98.7 KB
Ali Khan, A
Shanahan, H. P.
Light quark masses are calculated in lattice QCD with two degenerate flavors of dynamical quarks. The calculations are made with improved actions with lattice spacing a = 0.22–0.11 fm. In the continuum limit we find mudMS̅(2 GeV) = 3.44-0.22+0.14 MeV using the π and ρ meson masses as physical input, and msMS̅(2 GeV) = 88-6+4 MeV or 90-11+5 MeV with the K or φ meson mass as additional input. The quoted errors represent statistical and systematic combined, the latter including those from continuum and chiral extrapolations, and from renormalization factors. Compared to quenched results, two flavors of dynamical quarks reduce quark masses by about 25%.
Physical Review Letters
|date of issued||
The American Physical Society
Copyright (c) 2000 The American Physical Society
|relation is version of URL||
Graduate School of Science