出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present preliminary results on the r 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 nonzero
total momentum frame (the moving frame) derived by Rummukainen and Gottlieb, using the
Nf
2 improvedWilson fermion action at mp mr
0
41 and L
2
53 fm.
