I=2 Pion Scattering Length and Phase Shift with Wilson Fermions

Abstract

We present preliminary results of scattering length and phase shift for I=2 S-wave $\ddot{I}€\ddot{I}€$ system with the Wilson fermions in the quenched approximation. The finite size method presented by Lüscher is employed, and calculations are carried out at ${\hat{I}}^2=5.9$ on a $24^3\times 60$ and $32^3\times 60$ lattice.

Lattice2001(spectrum)