Heavy Meson Decay Constants from Quenched Lattice QCD

Physical Review Letters 80 巻 5711-5715 頁 1998 発行
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タイトル ( eng )
Heavy Meson Decay Constants from Quenched Lattice QCD
作成者
JLQCD Collaboration
Aoki S
Fukugita M
Hashimoto S
Ishizuka N
Iwasaki Y
Kanaya K
Kuramashi Y
Ukawa A
Yoshié T
収録物名
Physical Review Letters
80
開始ページ 5711
終了ページ 5715
抄録
A quenched lattice QCD calculation of the B and D meson decay constants is presented. To investigate scaling violation associated with the heavy quarks, parallel simulations are carried out employing both Wilson and the O(a)-improved clover quark actions. The discretization errors due to the large b quark mass are estimated with the aid of the nonrelativistic interpretation approach of El-Khadra, Kronfeld, and Mackenzie [Phys. Rev. D 55, 3933 (1997)]. As the best values from our simulations at β = 5.9, 6.1, and 6.3 we obtain fB = 173(4) MeV, fBs = 1993 MeV for B mesons and fD = 1972 MeV, fDs = 2242 MeV for D mesons where the errors are statistical. In addition we expect a 5% ( 7-1.973389or D mesons) systematic error and a 5 6.880872e-316rror in the uncertainty to determine the lattice scale, besides the quenching error, which is not estimated in this Letter.
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
The American Physical Society
発行日 1998
権利情報
Copyright (c) 1998 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] 0031-9007
[DOI] http://dx.doi.org/10.1103/PhysRevLett.80.5711 ~の異版である