{"arxiv_id":"hep-lat/0206011","title":"I=2 Pion Scattering Length with the Wilson Fermion","abstract":"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 $a_0m_\\pi=-0.0444(10)$.","primary_cat":"hep-lat","cross_cats":[],"submitted_at":"2002-06-15T06:59:52+00:00","latest_version":2,"source":"arxiv","source_label":"arXiv","source_url":null,"has_pdf":true,"has_source":false,"verdict":null,"confidence":null,"one_line_summary":null,"novelty_score":null,"correctness_risk":null,"formal_verification":null,"upvotes":0,"downvotes":0,"pith_score":0.0,"inbound_count":4,"_links":{"html":"https://pith.science/paper/hep-lat/0206011","verdict":"/api/v1/verdicts/hep-lat/0206011"}}