{"paper":{"title":"I=2 Pion Scattering Length with the Wilson Fermion","license":"","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"A. Ukawa, JLQCD Collaboration: S. Aoki, K-I. Ishikawa, K. Kanaya, M. Fukugita, M. Okawa, N. Ishizuka, N. Tsutsui, N. Yamada, S. Hashimoto, S. Tominaga, T. Kaneko, T. Onogi, T. Yoshi\\'e, Y. Iwasaki, Y. Kuramashi","submitted_at":"2002-06-15T06:59:52Z","abstract_excerpt":"The calculation of the I=2 pion scattering length in quenched lattice QCD is revisited. The calculation is carried out with the Wilson fermion action employing L\\\"uscher's finite size scaling method at $\\beta=5.9$, 6.1, and 6.3 corresponding to the range of lattice spacing $a\\simeq 0.12 - 0.07$ fm. We obtain in the continuum limit $a_0m_\\pi = -0.0410(69)$, which is consistent with the prediction of chiral perturbation theory $a_0m_\\pi=-0.0444(10)$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-lat/0206011","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}