Light Quark Masses with an O(a)-Improved Action

T. Onogi; A. X. El-Khadra; B. J. Gough; G. M. Hockney; A. S. Kronfeld; P. B. Mackenzie; B. P. Mertens; J. N. Simone

doi:10.1016/S0920-5632(96)00639-1

paper

Light Quark Masses with an O(a)-Improved Action

arXiv:hep-lat/9609014 · doi:10.1016/S0920-5632(96)00639-1

Abstract

We present the recent Fermilab calculations of the masses of the light quarks, using tadpole-improved Sheikholeslami-Wohlert (SW) quarks. Various sources of systematic errors are studied. Our final result for the average light quark mass in the quenched approximation evaluated in the $M S ˉ$ scheme is $m ˉ_{q} (I^¼ = 2 G e V; n_{f} = 0) = (m_{u} + m_{d}) /2 = 3.6 \pm 0.6 M e V$ .

3 pgs. 3 figures. espcrc2.sty included. Talk presented at LATTICE96(phenomenology)