Chiral extrapolations with small sea quark mass data in two-flavor lattice QCD

Details Chiral extrapolations with small sea quark mass data in two-flavor lattice QCD Chiral extrapolations with small sea quark mass data in two-flavor lattice QCD

2004-09-11

arxiv.org/abs/hep-lat/0409043v1

Physics

High Energy Physics

High Energy Physics - Lattice

3 pages, 3 figures, Talk presented at Lattice2004(spectrum), Fermilab, June 21-26, 2004

Scientific paper

We present results on the light hadron spectrum and quark mass in two-flavor QCD calculated with small sea quark masses down to $m_{PS}/m_{V}=0.35$. The configurations are generated using the RG improved gauge and tadpole-improved clover quark action at $\beta=1.8$, where $a^{-1} \simeq 1$ GeV. Chiral extrapolations are made using not only polynomials and ChPT in the continuum but also formulae of Wilson chiral perturbation theory (WChPT) including $O(a^2)$ chiral breaking terms. We examine the viability of WChPT and its influence on quark masses.

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