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Dynamical Quark Effects on Light Quark Masses
Dynamical Quark Effects on Light Quark Masses
Khan, A.Ali
Aoki, S.
Boyd, G.
Burkhalter, R.
Ejiri, S.
Fukugita, M.
Hashimoto, S.
Ishizuka, N.
Iwasaki, Y.
Kanaya, K.
Kaneko, T.
Kuramashi, Y.
Manke, T.
Nagai, K.
Okawa, M.
Shanahan, H.P.
Ukawa, A.
Yoshie, T.
CP-PACS, Collaboration
(C) 2000 American Physical Society
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 m MS ¯ ud (2GeV)=3.44 +0.14 −0.22 MeV using the π and ρ meson masses as physical input, and m MS ¯ s (2GeV)=88 +4 −6 MeV or 90 +5 −11 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% .
American Physical Society
2000-11
eng
journal article
http://hdl.handle.net/10191/27630
https://niigata-u.repo.nii.ac.jp/records/2484
info:doi/10.1103/PhysRevLett.85.4674
AA00773679
00319007
Physical Review Letters
Physical Review Letters
85
22
4674
4677
https://niigata-u.repo.nii.ac.jp/record/2484/files/85_22_4674-4677.pdf
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2019-07-29