Determining the strange quark mass for 2-flavour QCD

Details Determining the strange quark mass for 2-flavour QCD Determining the strange quark mass for 2-flavour QCD

2006-02-22

arxiv.org/abs/hep-lat/0602028v1

Nucl.Phys.Proc.Suppl.153:154-161,2006

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 8 figures, proceedings of "Workshop on Computational Hadron Physics", Cyprus, Sept. 2005

Scientific paper

10.1016/j.nuclphysbps.2006.01.02

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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