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$ρ$ 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
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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 $N_f=2$ improved Wilson fermion action at $m_π/m_ρ=0.41$ and $L=2.53 {\rm fm}$.

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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. 2006-10-03. $ρ$ meson decay from the lattice. https://arxiv.org/abs/hep-lat/0610020

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