Light Quark Masses with Dynamical Wilson Fermions

Eicker, N.; Glässner, U.; Güsken, S.; Hoeber, H.; Lacock, P.; Lippert, Th.; Ritzenhöfer, G.; Schilling, K.; Siegert, G.; Spitz, A.; Ueberholz, P.; Viehoff, J.

Light Quark Masses with Dynamical Wilson Fermions

Authors

Description

We determine the masses of the light and the strange quarks in the $\bar{MS}$-scheme using our high-statistics lattice simulation of QCD with dynamical Wilson fermions. For the light quark mass we find $m^{light}_{\bar{MS}}(2 GeV) = 2.7(2) MeV$, which is lower than in quenched simulations. For the strange quark, in a sea of two dynamical light quarks, we obtain $m^{strange}_{\bar{MS}}(2 GeV) = 140(20) MeV$.
10 pages (latex file, uses epsf-style)