Light hadron spectrum with 2+1 flavor dynamical $O(a)$-improved Wilson quarks

Details Light hadron spectrum with 2+1 flavor dynamical $O(a)$-improved Wilson quarks Light hadron spectrum with 2+1 flavor dynamical $O(a)$-improved Wilson quarks

2007-10-18

arxiv.org/abs/0710.3462v1

PoSLAT2007:138,2007

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 11 figures, talk presented at the XXV International Symposium on Lattice Field Theory, July 30 - August 4, 2007, Rege

Scientific paper

We present preliminary results for the light harden spectrum in $N_f=2+1$ lattice QCD obtained with the nonperturbatively $O(a)$-improved Wilson quark action and the Iwasaki gauge action. Simulations are carried out at $\beta=1.90$ on a $32^3 \times 64$ lattice using the PACS-CS computer. We employ L\"uscher's domain-decomposed HMC algorithm to reduce the up-down quark masses toward the physical value. The pseudoscalar meson masses range from 730 MeV down to 210 MeV. We compare the light harden spectrum extrapolated to the physical point with the experimental values.

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