Significant progresses in lattice calculations of light and heavy quark masses have been allowed by the introduction of improved actions and non-perturbative renormalization techniques. Current determinations of light quark masses are accurate at the level of 20%, where the main source of uncertainty is represented by the quenching error. The determination of the bottom quark mass is accurate at the impressive level of 2%. As final averages of lattice results, I quote (m) over bar (u,d)(2 GeV) = (4.5 +/- 1.0) MeV, (m) over bar (s)(2 GeV) = (110 +/- 25) MeV and (m) over bar (b)((m) over bar (b)) = (4.26 +/- 0.09) GeV.
Lubicz, V. (2001). Quark masses on the lattice: Light and heavy. In Lattice 2000: proceedings of the XVIIIth International Symposium on Lattice Field Theory (pp.116-129) [10.1016/S0920-5632(01)00963-X].
Quark masses on the lattice: Light and heavy
LUBICZ, Vittorio
2001-01-01
Abstract
Significant progresses in lattice calculations of light and heavy quark masses have been allowed by the introduction of improved actions and non-perturbative renormalization techniques. Current determinations of light quark masses are accurate at the level of 20%, where the main source of uncertainty is represented by the quenching error. The determination of the bottom quark mass is accurate at the impressive level of 2%. As final averages of lattice results, I quote (m) over bar (u,d)(2 GeV) = (4.5 +/- 1.0) MeV, (m) over bar (s)(2 GeV) = (110 +/- 25) MeV and (m) over bar (b)((m) over bar (b)) = (4.26 +/- 0.09) GeV.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
