| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
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|
タイトル |
Lattice study of B→π semileptonic decay using nonrelativistic lattice QCD |
|
言語 |
en |
| 作成者 |
Hashimoto, Shoji
Ishikawa, Ken-Ichi
Matsufuru, Hideo
Onogi, Tetsuya
Yamada, Norikazu
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| アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
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|
権利情報 |
Copyright (c) 1998 The American Physical Society. |
| 内容記述 |
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内容記述 |
We present an exploratory lattice study of B→π semileptonic decay form factors using nonrelativistic lattice QCD for a heavy quark with a Wilson light quark on a 163×32 quenched lattice at β=5.8. The matrix elements are calculated at eight values of the heavy quark mass in the range of 1.5–8 GeV and with three values of light quark mass. The 1/mB corrections to the matrix elements are found to be fairly small except for the spatial component proportional to the B-meson momentum. We find that the q2 dependence of the form factor f+(q2) near q2 max becomes much stronger for a larger heavy quark mass, which may suggest an increase in the pole contribution. We perform a model independent fit of the form factors and study whether the q2 dependence is consistent with the pole contribution. Although the soft pion theorem predicts f0(q2 max) =fB / fπ in the chiral limit, we observe a significant violation of this relation. |
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言語 |
en |
| 出版者 |
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出版者 |
American Physical Society |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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|
出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
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識別子タイプ |
DOI |
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関連識別子 |
10.1103/PhysRevD.58.014502 |
| 関連情報 |
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|
識別子タイプ |
DOI |
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関連識別子 |
http://dx.doi.org/10.1103/PhysRevD.58.014502 |
| 収録物識別子 |
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収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1550-7998 |
| 収録物識別子 |
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収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00773624 |
| 開始ページ |
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開始ページ |
014502-1 |
| 書誌情報 |
Physical Review D
Physical Review D
巻 58,
号 1,
p. 014502-1-014502-17,
発行日 1998-05-15
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| 旧ID |
19254 |
PhysRevD_58_014502.pdf (322.0 KB)
