6533b7d4fe1ef96bd12626d2
RESEARCH PRODUCT
Non-perturbatively renormalised light quark masses from a lattice simulation with Nf=2
Silvano SimulaBenoit BlossierPh. BoucaudFederico MesciaVittorio LubiczDamir BecirevicCecilia TarantinoV. Gimenezsubject
QuarkPhysicsNuclear and High Energy PhysicsTop quarkParticle physics010308 nuclear & particles physicsHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyDown quarkTop quark condensateLattice QCD01 natural sciencesBottom quarkNuclear physicsLattice (order)0103 physical sciencesUp quarkHigh Energy Physics::Experiment010306 general physicsdescription
Abstract We present results for the light quark masses obtained from a lattice QCD simulation with N f = 2 degenerate Wilson dynamical quark flavours. The sea quark masses of our lattice, of spacing a ≃ 0.06 fm , are relatively heavy, i.e., they cover the range corresponding to 0.60 ≲ M P / M V ≲ 0.75 . After implementing the non-perturbative RI-MOM method to renormalise quark masses, we obtain m ud MS ¯ ( 2 GeV ) = 4.3 ± 0.4 −0 +1.1 MeV , and m s MS ¯ ( 2 GeV ) = 101 ± 8 −0 +25 MeV , which are about 15% larger than they would be if renormalised perturbatively. In addition, we show that the above results are compatible with those obtained in a quenched simulation with a similar lattice.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-01-01 | Nuclear Physics B |