Application of chiral perturbation theory to 2+1 flavor lattice QCD with O(a)-improved Wilson quarks
Abstract
We apply chiral perturbation theory to the pseudoscalar meson mass and decay constant data obtained in the PACS-CS Project toward 2+1 flavor lattice QCD simulations with the O(a)-improved Wilson quarks. We examine the existence of chiral logarithms in the quark mass range from m_{ud}=47 MeV down to 6 MeV on a (2.8 fm)^3 box with the lattice spacing a=0.09 fm. Several low energy constants are determined. We also discuss the magnitude of finite size effects based on chiral perturbation theory.
- Publication:
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arXiv e-prints
- Pub Date:
- October 2007
- DOI:
- 10.48550/arXiv.0710.3467
- arXiv:
- arXiv:0710.3467
- Bibcode:
- 2007arXiv0710.3467P
- Keywords:
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- High Energy Physics - Lattice
- E-Print:
- 7 pages, 6 figures, talk presented at the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, Germany