| Precision measurements of B(D+ -> mu(+)nu(mu)), the pseudoscalar decay constant fD+, and the quark mixing matrix element vertical bar V-cd vertical bar |
| BESIII Callaboration
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| 2014
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发表期刊 | PHYSICAL REVIEW D
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卷号 | 89期号:5 |
通讯作者 | Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
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摘要 | We report a measurement of the branching fraction B(D+ -> mu(+)nu(mu)) = [3.71 +/- 0.19(stat) +/- 0.06(sys)] x 10(-4) based on 2.92 fb(-1) of data accumulated at root s = 3.773 GeV with the BESIII detector at the BEPCII collider. This measurement, in conjunction with the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cd vertical bar determined from a global Standard Model fit, implies a value for the weak decay constant f(D+) = (203.2 +/- 5.3 +/- 1.8) MeV. Additionally, using this branching fraction measurement together with a lattice QCD prediction for f(D+), we find vertical bar V-cd vertical bar 0.2210 +/- 0.0058 +/- 0.0047. In either case, these are the most precise results for these quantities to date. |
关键词 | MESONS
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学科领域 | Astronomy & Astrophysics; Physics
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DOI | 10.1103/PhysRevD.89.051104
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收录类别 | SCI
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语种 | 英语
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WOS类目 | Astronomy & Astrophysics
; Physics, Particles & Fields
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WOS记录号 | WOS:000334307600001
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引用统计 |
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文献类型 | 期刊论文
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条目标识符 | http://ir.ihep.ac.cn/handle/311005/213690
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专题 | 实验物理中心
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作者单位 | 中国科学院高能物理研究所
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推荐引用方式 GB/T 7714 |
BESIII Callaboration. Precision measurements of B(D+ -> mu(+)nu(mu)), the pseudoscalar decay constant fD+, and the quark mixing matrix element vertical bar V-cd vertical bar[J]. PHYSICAL REVIEW D,2014,89(5).
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APA |
BESIII Callaboration.(2014).Precision measurements of B(D+ -> mu(+)nu(mu)), the pseudoscalar decay constant fD+, and the quark mixing matrix element vertical bar V-cd vertical bar.PHYSICAL REVIEW D,89(5).
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MLA |
BESIII Callaboration."Precision measurements of B(D+ -> mu(+)nu(mu)), the pseudoscalar decay constant fD+, and the quark mixing matrix element vertical bar V-cd vertical bar".PHYSICAL REVIEW D 89.5(2014).
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文件名:
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1230.pdf
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Adobe PDF
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