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ID 14531
本文ファイル
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著者
JLQCD, Collaboration
Aoki, S
Fukugita, M
Hashimoto, S
Ishizuka, N
Iwasaki, Y
Kanaya, K
Kuramashi, Y
Ukawa, A
Yoshié, T
NDC
物理学
抄録(英)
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.
掲載誌名
Physical Review Letters
80巻
開始ページ
5711
終了ページ
5715
出版年月日
1998
出版者
The American Physical Society
ISSN
0031-9007
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
publisher
権利情報
Copyright (c) 1998 The American Physical Society
関連情報URL(IsVersionOf)
http://dx.doi.org/10.1103/PhysRevLett.80.5711
部局名
理学研究科