Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1999-09-08
Nucl.Phys.Proc.Suppl. 83 (2000) 176-178
Physics
High Energy Physics
High Energy Physics - Lattice
Latex 3 pages, 6 PostScript figures, Talk presented at LATTICE99(QCD Spectrum and Quark Masses)
Scientific paper
We present updated results of the CP-PACS calculation of the light hadron spectrum in $N_{\rm f}=2$ full QCD. Simulations are made with an RG-improved gauge action and a tadpole-improved clover quark action for sea quark masses corresponding to $m_{\rm PS}/m_{\rm V} \approx 0.8$--0.6 and the lattice spacing $a=0.22$--0.09 fm. A comparison of the full QCD spectrum with new quenched results, obtained with the same improved action, shows clearly the existence of sea quark effects in vector meson masses. Results for light quark masses in $N_{\rm f}=2$ QCD are also presented.
Ali Khan CP-PACS Collaboration: A.
Aoki Sadao
Boyd Graham
Burkhalter Rudolf
Ejiri Shinji
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