@article{oai:tsukuba.repo.nii.ac.jp:00025866,
 author = {青木, 愼也 and 石塚, 成人 and 金谷, 和至 and 藏増, 嘉伸 and 谷口, 裕介 and 宇川, 彰 and 吉江, 友照 and Aoki, S. and Ishikawa, K-I. and Ishizuka, N. and Kanaya, K. and Kuramashi, Y. and Namekawa, Y. and Okawa, M. and Taniguchi, Y. and Ukawa, A. and Ukita, N. and Yamazaki, T.},
 issue = {09},
 journal = {Physical review D},
 month = {Nov},
 note = {We perform a lattice QCD study of the ρ meson decay from the Nf=2+1 full QCD configurations generated with a renormalization group improved gauge action and a nonperturbatively O(a)-improved Wilson fermion action. The resonance parameters, the effective ρ→ππ coupling constant and the resonance mass, are estimated from the P-wave scattering phase shift for the isospin I=1 two-pion system. The finite size formulas are employed to calculate the phase shift from the energy on the lattice. Our calculations are carried out at two quark masses, mπ=410??MeV (mπ/mρ=0.46) and mπ=300??MeV (mπ/mρ=0.35), on a 323×64 (La=2.9??fm) lattice at the lattice spacing a=0.091??fm. We compare our results at these two quark masses with those given in the previous works using Nf=2 full QCD configurations and the experiment.},
 title = {ρ meson decay in 2+1 flavor lattice QCD},
 volume = {84},
 year = {2011},
 yomi = {Yoshie, T.}
}