New estimate of quark mass parameters

An estimate of quark mass parameters suitable for the study of chiral-symmetry-breaking effects is made using exact Goldberger-Treiman relations for the Goldstone bosons which appear in the Weinberg-Salam theory when the gauge coupling is set to zero. The numbers obtained are $m_u=13.7\mathrm{}\pm 5.9$ MeV, $m_d=24.7\mathrm{}\pm 12.9$ MeV, and $m_s=497\mathrm{}\pm 299$ MeV. Consistency of the various Goldberger-Treiman relations with current-algebra mass ratios is discussed. The relationship of these parameters to those obtained in previous evaluations is discussed.