Lattice simulations of the strange quark mass and Fritzsch texture

A number of numerical simulations of lattice gauge theory have indicated a low mass of strange quark in 100 MeV range at the scale of mu = 2 GeV. in the unquenched case, which is improved over the simulation in the quenched approximation by the inclusion of ri and d sea quark effects, one sees a further downward trend. Here the fermion mass spectrum of the Fritzsch texture is recalculated. in a single step supersymmetric GUT with M-X similar to 10(16) GeV such values of the strange quark mass can be obtained for low values of tan beta. Experimental numbers m(t)(pole) = 173 +/- 6 GeV and 4.1 < m(b) (m(b)) < 4.4 GeV are used in this study. Since the scenario is supersymmetric, gaugino loop diagrams contribute to the masses in addition to usual tree level Yukawa contributions. Upper bound of the mixing parameter V-cb is taken at 0.045. (C) 2000 Elsevier Science B.V. All rights reserved.