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 L\"uscher is employed, and calculations are carried out at β=5.9 on a 243×60 and 323×60 lattice.
@article{arxiv.hep-lat/0110151,
title = {I=2 Pion Scattering Length and Phase Shift with Wilson Fermions},
author = {PACS Collaboration and S. Aoki and R. Burkhalter and M. Fukugita and S. Hashimoto and N. Ishizuka and Y. Iwasaki and K. Kanaya and T. Kaneko and Y. Kuramashi and V. Lesk and M. Okawa and Y. Taniguchi and A. Ukawa and T. Yoshié},
journal= {arXiv preprint arXiv:hep-lat/0110151},
year = {2012}
}