An unquenched lattice QCD calculation of the mass of the bottom quark

摘要

We compute the b quark mass from dynamical lattice QCD with clover quarks. The calculation is done at a fixed lattice spacing with sea quark masses as low as half the strange quark mass. Our final result is (m(b)) over bar((m(b)) over bar) = 4.25(2)(11) GeV, where the first error is statistical and the last error is the systematic uncertainty. (C) 2004 Elsevier B.V. All rights reserved.