Measurement of the form factors of the decay B-0 -> D*(-) l(+) v(l) and determination of the CKM matrix element vertical bar V-cb vertical bar
文献类型：期刊论文
| 作者 | Belle Collaboration |
| 刊名 | PHYSICAL REVIEW D
 |
| 出版日期 | 2010 |
| 卷号 | 82期号:11 |
| 关键词 | SEMILEPTONIC DECAY HEAVY MESONS MONTE-CARLO BELLE IDENTIFICATION SYMMETRY DETECTOR KEKB |
| 通讯作者 | Dungel, W (reprint author), Inst High Energy Phys, Vienna, Austria. |
| 英文摘要 | This article describes a determination of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cb vertical bar from the decay B-0 -> D*(-) l(+) v(l) using 711 fb(-1) of Belle data collected near the Y(4S) resonance. We simultaneously measure the product of the form factor normalization F(1) and the matrix element vertical bar V-cb vertical bar as well as the three parameters rho(2), R-1(1) and R-2(1), which determine the form factors of this decay in the framework of the heavy quark effective theory. The results, based on about 120 000 reconstructed B-0 -> D*(-) l(+) v(l) decays, are rho(2) = 1.214 +/- 0.034 +/- 0.009, R-1(1) = 1.401 +/- 0.034 +/- 0.018, R-2(1) = 0.864 +/- 0.024 +/- 0.008 and F(1)vertical bar V-cb vertical bar = (34.6 +/- 0.2 +/- 1.0) x 10(-3). The branching fraction of B-0 -> D*(-) l(+) v(l) is measured at the same time; we obtain a value of B-0 -> D*(-) l(+) v(l) = (4.58 +/- 0.03 +/- 0.26)%. The errors correspond to the statistical and systematic uncertainties. These results give the most precise determination of the form factor parameters and F(1)vertical bar V-cb vertical bar to date. In addition, a direct, model-independent determination of the form factor shapes has been carried out. |
| 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:000286578000001 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213001]  |
| 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. Measurement of the form factors of the decay B-0 -> D*(-) l(+) v(l) and determination of the CKM matrix element vertical bar V-cb vertical bar[J]. PHYSICAL REVIEW D,2010,82(11). |
| APA | Belle Collaboration.(2010).Measurement of the form factors of the decay B-0 -> D*(-) l(+) v(l) and determination of the CKM matrix element vertical bar V-cb vertical bar.PHYSICAL REVIEW D,82(11). |
| MLA | Belle Collaboration."Measurement of the form factors of the decay B-0 -> D*(-) l(+) v(l) and determination of the CKM matrix element vertical bar V-cb vertical bar".PHYSICAL REVIEW D 82.11(2010). |
入库方式： OAI收割
来源：高能物理研究所
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