ρ meson decay from the lattice
PACS collaboration, S. Aoki, M. Fukugita, K. -I. Ishikawa, N. Ishizuka, K. Kanaya, Y. Kuramashi, Y. Namekawa, M. Okawa, K. Sasaki, A. Ukawa, T. Yoshié
Abstract
We present preliminary results on the ρ meson decay width estimated from the scattering phase shift of the I=1 two-pion system. The phase shift is calculated by the finite size formula for non-zero total momentum frame (the moving frame) derived by Rummukainen and Gottlieb, using the Nf=2 improved Wilson fermion action at mπ/mρ=0.41 and L=2.53 fm.
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