The strange-quark mass from QCD sum rules: An Update

Abstract

Three different ways of determining the strange quark mass using QCD sum rules are reviewed. First, from a QCD sum rule determination of the up and down quark masses, together with the current algebra ratio $m_s/(m_u+m_d)$. Second and third, from QCD sum rules involving the strangeness changing vector and axial-vector current divergences, respectively. Present results are encompassed in the value: $m_s(1GeV)=150\pm 70MeV$. It is argued that until direct, and precision measurements of the relevant spectral functions become available, the above error is not likely to be reduced.

Invited talk at the XVI International Workshop on Weak Interactions and Neutrinos, WIN 97, Capri, June 1997. To be published in Nucl. Phys. B (Proc. Suppl.), no figures

References in corpus (5)

• The ratios of the light quark masses
• Light Quark Masses from QCD
• The Strange Quark Mass from QCD Sum Rules
• Mass singularities in light quark correlators: the strange quark case
• A possible experimental determination of $m_s/\hat{m}$ from $K_{\mu 4}$ decays