{"paper":{"title":"Non-perturbative renormalization of meson decay constants in quenched QCD for a renormalization group improved gauge action","license":"","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"A. Ukawa, CP-PACS Collaboration: K. Ide, K.-I. Ishikawa, K. Kanaya, M. Fukugita, M. Okawa, N. Ishizuka, R. Burkhalter, S. Aoki, S. Hashimoto, T. Ishikawa, T. Kaneko, T. Umeda, T. Yoshi\\'e, V. Lesk, Y. Iwasaki, Y. Kuramashi, Y. Taniguchi","submitted_at":"2004-04-30T18:56:20Z","abstract_excerpt":"Renormalization constants ($Z$-factors) of vector and axial-vector currents are determined non-perturbatively in quenched QCD for a renormalization group improved gauge action and a tadpole improved clover quark action using the Schr\\\"odinger functional method. Non-perturbative values of $Z$-factors turn out to be smaller than one-loop perturbative values by $O(15%)$ at lattice spacing of $a^{-1}\\approx$ 1 GeV. The pseudoscalar and vector meson decay constants calculated with the non-perturbative $Z$-factors show a much better scaling behavior compared to previous results obtained with tadpole"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-lat/0404021","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"}