Determining the strange quark mass for 2-flavour QCD
高能物理 - 格点
2008-11-26 v1
摘要
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.
引用
@article{arxiv.hep-lat/0602028,
title = {Determining the strange quark mass for 2-flavour QCD},
author = {M. Göckeler and R. Horsley and A. C. Irving and D. Pleiter and P. E. L. Rakow and G. Schierholz and H. Stüben and J. M. Zanotti},
journal= {arXiv preprint arXiv:hep-lat/0602028},
year = {2008}
}
备注
8 pages, 8 figures, proceedings of "Workshop on Computational Hadron Physics", Cyprus, Sept. 2005