Renormalization of the ΔB=2 four-quark operators in lattice nonrelativistic QCD

Physical Review D 62 巻 11 号 114502-1-114502-22 頁 2000-10-24 発行
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タイトル ( eng )
Renormalization of the ΔB=2 four-quark operators in lattice nonrelativistic QCD
作成者
Hashimoto Shoji
Ishikawa Ken-Ichi
Onogi Tetsuya
Sakamoto N.
Tsutsui Naoto
Yamada Norikazu
収録物名
Physical Review D
62
11
開始ページ 114502-1
終了ページ 114502-22
抄録
We calculate perturbative renormalization constants for the ΔB=2 four-quark operators in lattice NRQCD. Continuum operators b̄γμ(1-γ5)qb̄γ μ(1-γ5)q and b̄(1-γ5)qb̄(1-γ5)q, which are necessary in evaluating the mass and width differences in Bd(s)0-B̄d(s)0 systems, are matched at one loop with corresponding lattice operators constructed from the NRQCD heavy quarks and the script O sign(a)-improved light quarks. Using these perturbative coefficients, we also reanalyze our previous simulation results for the matrix elements of the above operators. Our new results are free from the systematic error of script O sign(αs/(aMb)) in contrast with the previous ones with matching coefficients evaluated in the static limit.
言語
英語
資源タイプ 学術雑誌論文
出版者
American Physical Society
発行日 2000-10-24
権利情報
Copyright (c) 2000 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.62.114502
[NCID] AA00773624
[DOI] http://dx.doi.org/10.1103/PhysRevD.62.114502