Determination of the strange-quark mass from QCD pseudoscalar sum rules
High Energy Physics - Phenomenology
2009-10-31 v1
Abstract
A new determination of the strange-quark mass is discussed, based on the two-point function involving the axial-vector current divergences. This Green function is known in perturbative QCD up to order O(alpha_s^3), and up to dimension-six in the non-perturbative domain. The hadronic spectral function is parametrized in terms of the kaon pole, followed by its two radial excitations, and normalized at threshold according to conventional chiral-symmetry. The result of a Laplace transform QCD sum rule analysis of this two-point function is: m_s(1 GeV^2) = 155 pm 25 MeV.
Keywords
Cite
@article{arxiv.hep-ph/9809338,
title = {Determination of the strange-quark mass from QCD pseudoscalar sum rules},
author = {C. A. Dominguez and L. Pirovano and K. Schilcher},
journal= {arXiv preprint arXiv:hep-ph/9809338},
year = {2009}
}
Comments
Invited talk given by CAD at QCD98, Montpellier, July 1998. To appear in Nucl.Phys.B Proc.Suppl. Latex File. Four (double column) pages