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Determining the strange quark mass for 2-flavour QCD

M. Göckeler·R. Horsley·A. C. Irving·D. Pleiter·P. E. L. Rakow·G. Schierholz·H. Stüben·J. M. Zanotti
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Abstract

Using the O(a) Symanzik improved action an estimate is given for the strange quark mass for unquenched (n_f=2) QCD. The determination is via the axial Ward identity (AWI) and includes a non-perturbative evaluation of the renormalisation constant. Numerical results have been obtained at several lattice spacings, enabling the continuum limit to be taken. Our results indicate a value for the strange quark mass (in the MS-bar scheme at a scale of 2 GeV) in the range 100 - 130 MeV. A comparison is also made with other recent lattice determinations of the strange quark mass using dynamical sea quarks.

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M. Göckeler, R. Horsley, A. C. Irving, D. Pleiter, P. E. L. Rakow, G. Schierholz, H. Stüben, J. M. Zanotti. 2006-02-22. Determining the strange quark mass for 2-flavour QCD. https://doi.org/10.1016/j.nuclphysbps.2006.01.023

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