Moments of the electron energy spectrum and partial branching fraction of B -> X(c)e nu decays at the Belle detector
文献类型：期刊论文
| 作者 | Belle Collaboration |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2007 |
| 卷号 | 75期号:3 |
| 关键词 | SEMILEPTONIC B-DECAY HEAVY-QUARK SYMMETRY MESON DECAYS QCD DISTRIBUTIONS MODELS |
| 通讯作者 | Urquijo, P (reprint author), Budker Inst Nucl Phys, Novosibirsk 630090, Russia. |
| 英文摘要 | We report a measurement of the inclusive electron energy spectrum for charmed semileptonic decays of B mesons in a 140 fb(-1) data sample collected at the Y(4S) resonance with the Belle detector at the KEKB asymmetric energy e(+) e(-) collider. We determine the first four moments of the electron energy spectrum for threshold values of the electron energy between 0.4 and 2.0 GeV. In addition, we provide values of the partial branching fraction (zeroth moment) for the same electron threshold energies, and independent measurements of the B+ and B-0 partial branching fractions at 0.4 GeV and 0.6 GeV electron threshold energies. We measure the independent B+ and B-0 partial branching fractions with electron threshold energies of 0.4 GeV to be Delta B(B+ -> X(c)ev) = (10.79 +/- 0.25 (stat.) +/- 0.27 (sys.))% and Delta B(B-0 -> X(c)ev) = (10.08 +/- 0.30 (stat.) +/- 0.22 (sys.))%. Full correlations between all measurements are evaluated. |
| 学科主题 | Astronomy & Astrophysics; Physics |
| 类目[WOS] | Astronomy & Astrophysics ; Physics, Particles & Fields |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000244534800008 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/212788]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Belle Collaboration. Moments of the electron energy spectrum and partial branching fraction of B -> X(c)e nu decays at the Belle detector[J]. PHYSICAL REVIEW D,2007,75(3). |
| APA | Belle Collaboration.(2007).Moments of the electron energy spectrum and partial branching fraction of B -> X(c)e nu decays at the Belle detector.PHYSICAL REVIEW D,75(3). |
| MLA | Belle Collaboration."Moments of the electron energy spectrum and partial branching fraction of B -> X(c)e nu decays at the Belle detector".PHYSICAL REVIEW D 75.3(2007). |
入库方式： OAI收割
来源：高能物理研究所
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