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Kaon B parameter with the Wilson quark action using chiral Ward identities
http://hdl.handle.net/2241/89386
http://hdl.handle.net/2241/893868b961bd2-bd2b-4b53-900b-ac60152419dc
名前 / ファイル | ライセンス | アクション |
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PRD_60-3.pdf (500.5 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2007-05-24 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Kaon B parameter with the Wilson quark action using chiral Ward identities | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
著者 |
Aoki, S.
× Aoki, S.× Fukugita, M.× Hashimoto, S.× Ishizuka, N.× 岩崎, 洋一× Kanaya, K.× Kuramashi, Y.× Okawa, M.× 宇川, 彰× Yoshie, T. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A lattice QCD calculation of the kaon B parameter BK is carried out with the Wilson quark action in the quenched approximation at β=6/g^2=5.9-6.5. The mixing problem of the Δs=2 four-quark operators is solved nonperturbatively with full use of chiral Ward identities employing four external quarks with an equal off-shell momentum in the Landau gauge. This method, without invoking any effective theory, enables us to construct the weak four-quark operators exhibiting good chiral behavior. Our results for BK with the nonperturbative mixing coefficients show small scaling violation beyond the lattice cutoff a^-1~2.5 GeV. Our estimate concludes BK(NDR,2 GeV)=0.69(7) at a^-1=2.7-4.3 GeV, which agrees with the value obtained with the Kogut-Susskind quark action. For comparison we also calculate BK with one-loop perturbative mixing coefficients. While this yields incorrect values at finite lattice spacing, a linear extrapolation to the continuum limit as a function of a leads to a result consistent with those obtained with the Ward identity method. | |||||
言語 | en | |||||
書誌情報 |
en : Physical review D 巻 60, 号 3, p. 034511, 発行日 1999-07 |
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ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 2470-0010 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00773624 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevD.60.034511 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | (c) 1999 The American Physical Society | |||||
出版タイプ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
言語 | en | |||||
出版者 | American Physical Society | |||||
URI | ||||||
識別子 | http://hdl.handle.net/2241/89386 | |||||
識別子タイプ | HDL |