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B meson leptonic decay constant with quenched lattice NRQCD
http://hdl.handle.net/2241/89382
http://hdl.handle.net/2241/8938207bacf1d-7281-4138-8521-d40203ce61d1
名前 / ファイル | ライセンス | アクション |
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PRD_61-7.pdf (222.6 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 | B meson leptonic decay constant with quenched lattice NRQCD | |||||
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 |
Ishikawa, K-I.
× Ishikawa, K-I.× Yamada, N.× Aoki, S.× Fukugita, M.× Hashimoto, S.× Ishizuka, N.× 岩崎, 洋一× Kanaya, K.× Kaneda, T.× Kaya, S.× Kuramashi, Y.× Matsufuru, H.× Okawa, M.× Onogi, T.× Tominaga, S.× Tsutsui, N.× 宇川, 彰× Yoshie, T. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | We present a lattice NRQCD study of the B meson decay constant in the quenched approximation with emphasis given to the scaling behavior. The NRQCD action and the heavy-light axial vector current we use include all terms of order 1/M and the perturbative O(αs a) and O(αs /M) corrections. Using simulations at three values of couplings β=5.7, 5.9, and 6.1 on lattices of sizes 12^3×32, 16^3×48, and 24^3×64, we find a significant a dependence disappears in fB if the O(αs a) correction is included in the axial vector current. We observe that β=5.9-6.1 is the window where systematic errors are expected to be minimum within one-loop improved theory. Our final results are fB=170(5)(15) MeV, fBs=191(4)(17)(-0+4) MeV, and fBs/fB=1.12(2)(1)(-0+3), where the first error is statistical, the second is systematic, and the third is due to the uncertainty of the strange quark mass, while quenching errors are not included. | |||||
言語 | en | |||||
書誌情報 |
en : Physical review D 巻 61, 号 7, p. 074501, 発行日 2000-02 |
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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 | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1103/PhysRevD.61.074501 | |||||
権利 | ||||||
言語 | en | |||||
権利情報 | (c) 2000 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/2241/89382 | |||||
識別子タイプ | HDL |