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RESEARCH PRODUCT
Lattice quark masses: a non-perturbative measurement
V. GimenezM. TaleviLeonardo GiustiFederico Rapuanosubject
QuarkPhysicsNuclear and High Energy PhysicsParticle physicsHigh Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)High Energy Physics::PhenomenologyLattice (group)FOS: Physical sciencesFísicaQuenched approximationLattice QCDRenormalizationFIS/02 - FISICA TEORICA MODELLI E METODI MATEMATICIHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)High Energy Physics - LatticeQCD quark masses latticeBeta (velocity)High Energy Physics::ExperimentNon-perturbativeNuclear ExperimentBar (unit)description
We discuss the renormalization of different definitions of quark masses in the Wilson and the tree-level improved SW-Clover fermionic action. For the improved case we give the correct relationship between the quark mass and the hopping parameter. Using perturbative and non-perturbative renormalization constants, we extract quark masses in the $\MSbar$ scheme from Lattice QCD in the quenched approximation at $\beta=6.0$, $\beta=6.2$ and $\beta=6.4$ for both actions. We find: $\bar{m}^{\MSbar}(2 GeV)=5.7 \pm 0.1 \pm 0.8$ MeV, $m_s^{\MSbar}(2GeV)= 130 \pm 2 \pm 18 $ MeV and $m_c^{\MSbar}(2 GeV) = 1662\pm 30\pm 230$ MeV.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1998-01-21 |