B0-anti-B0 mixing in quenched lattice QCD

Physical Review D 67 巻 1 号 014506- 頁 2003-01 発行
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タイトル ( eng )
B0-anti-B0 mixing in quenched lattice QCD
作成者
Aoki S.
Fukugita M.
Hashimoto S.
Ishizuka N.
Iwasaki Y.
Kaneya K.
Kaneko T.
Kuramashi Y.
Onogi T.
Tsutsui N.
Ukawa A.
Yamada N.
Yoshie T.
JLQCD Collaboration
収録物名
Physical Review D
67
1
開始ページ 014506
抄録
We present our results of lattice calculations of B parameters, which parametrize ΔB=2 transition amplitudes together with the leptonic decay constant. Calculations are made in the quenched approximation at β=5.7, 5.9, 6.0 and 6.1, using NRQCD action for heavy quarks and the O(a)-improved Wilson action for light quarks. The operators are perturbatively renormalized including the correction of O(αs/(aM)m) (m>~0). We examine the scaling behavior of B parameters, and discuss the systematic uncertainties based on the results with several different truncations of higher order terms in 1/M and αs expansions. We find BBd(mb)=0.84(3)(5), BBs/BBd=1.020(21)(+15-16)(+5-0) and BSs(mb)=0.85(1)(5)(+1-0) in the quenched approximation. The errors represent statistical and systematic errors as well as the uncertainty in the determination of strange quark mass.
著者キーワード
B0-anti-B0
B parameter
NRQCD
O(a)-improved Wilson action
NDC分類
物理学 [ 420 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
American Physical Society
発行日 2003-01
権利情報
Copyright (c) 2003 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.67.014506
[DOI] http://dx.doi.org/10.1103/PhysRevD.67.014506