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I=2 Pion Scattering Length with Wilson Fermions

JLQCD Collaboration, S. Aoki, M. Fukugita, S. Hashimoto, K-I. Ishikawa, N. Ishizuka, Y. Iwasaki, K. Kanaya, T. Kaneda, S. Kaya, Y. Kuramashi, M. Okawa, T. Onogi, S. Tominaga, N. Tsutsui, A. Ukawa, N. Yamada, T. Yoshié

hep-latarXiv:hep-lat/9911025

Abstract

We present results for I=2 pion scattering length 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, 6.1, and 6.3. In the continuum limit, we obtain a result in reasonable agreement with the experimental value.

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