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

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

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