A Lattice determination of light quark masses
Aug, 1999
25 pages
Published in:
- Phys.Rev.D 62 (2000) 054504
e-Print:
- hep-lat/9908005 [hep-lat]
Report number:
- DESY-99-097,
- HLRZ-99-30,
- HUB-EP-99-31,
- FUB-HEP-3-99,
- TPR-99-09
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Abstract:
A fully non-perturbative lattice determination of the up/down and strange quark masses is given for quenched QCD using both, improved Wilson fermions and ordinary Wilson fermions. For the strange quark mass with improved fermions we obtain m^{\msbar}_s(\mu=2 {GeV}) = 105(4) {MeV}, using the interquark force scale . Due to quenching problems fits are only possible for quark masses larger than the strange quark mass. If we extrapolate our fits to the up/down quark mass we find for the average mass m^{\msbar}_l(\mu=2 {GeV}) = 4.4(2) {MeV}.Note:
- Latex, 25 pages, 12 eps figures Report-no: DESY 99-097, HLRZ 99-30, HUB-EP-99/31, FUB-HEP/3-99, TPR-99-09
- fermion: lattice field theory
- quark: mass
- up
- down
- strangeness
- quantum chromodynamics: nonperturbative
- approximation: quenching
- renormalization group
- continuum limit
- perturbation theory: tadpole
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