Phys. Rev. Lett. 85, 4674–4677 (2000)Dynamical Quark Effects on Light Quark MassesSee Also: Erratum Received 18 April 2000; published in the issue dated 27 November 2000 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+0.14MeV using the π and ρ meson masses as physical input, and msMS̅ (2GeV) = 88-6+4MeV or 90-11+5MeV 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%. © 2000 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.85.4674
DOI:
10.1103/PhysRevLett.85.4674
PACS:
12.38.Gc, 12.15.Ff, 14.65.Bt
See AlsoErratum: A. Ali Khan, S. Aoki, G. Boyd, R. Burkhalter, S. Ejiri, M. Fukugita, S. Hashimoto, N. Ishizuka, Y. Iwasaki, K. Kanaya, T. Kaneko, Y. Kuramashi, T. Manke, K. Nagai, M. Okawa, H. P. Shanahan, A. Ukawa, and T. Yoshié CP-PACS Collaboration, Erratum: Dynamical Quark Effects on Light Quark Masses [Phys. Rev. Lett. 85, 4674 (2000)], Phys. Rev. Lett. 90, 029902 (2003). |
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