fB with lattice NRQCD including O(1/mQ2) corrections

Physical Review D 56 巻 11 号 7028-7038 頁 1997-12-01 発行
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タイトル ( eng )
fB with lattice NRQCD including O(1/mQ2) corrections
作成者
Ishikawa Ken-Ichi
Matsufuru Hideo
Onogi Tetsuya
Yamada Norikazu
Hashimoto Shoji
収録物名
Physical Review D
56
11
開始ページ 7028
終了ページ 7038
抄録
We investigate higher order effects in the nonrelativistic expansion of lattice QCD (NRQCD) on the heavy-light meson decay constants and some other quantities in order to understand the truncation error of NRQCD. While our numerical results have large O(a) and O(α) errors due to the use of the Wilson light quark action and tree-level matching, we find that the truncation error of higher order relativistic corrections are adequately small around the mass of the b quark. Simulations are carried out on a 163×32 lattice with 120 quenched gauge configurations generated with the plaquette action at β=5.8. Systematic errors and the limitation of NRQCD theory are discussed.
言語
英語
資源タイプ 学術雑誌論文
出版者
American Physical Society
発行日 1997-12-01
権利情報
Copyright (c) 1997 The American Physical Society.
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 1550-7998
[DOI] 10.1103/PhysRevD.56.7028
[NCID] AA00773624
[DOI] http://dx.doi.org/10.1103/PhysRevD.56.7028