Direct measurement of the pseudoscalar decay constant f(D+)
BES Collaboration
刊名PHYSICS LETTERS B
2005
卷号610期号:3-4页码:#REF!
学科分类Physics
DOI10.1016/j.physletb.2005.01.098
通讯作者Rong, G (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型Article
英文摘要The absolute branching fraction for the decay D+ -> mu(+)nu has been directly measured based on a data sample of about 33 pb(-1) collected around root s- = 3.773 GeV with the BES-II detector at the BEPC collider. A total of 5321 +/- 149 +/- 160 D- mesons are reconstructed in nine hadronic decay modes. In the system recoiling against these singly tagged D- mesons, 2.67 +/- 1.74 purely leptonic decay events of D+ -> mu+nu(mu) are observed. Those yield the branching fraction of BF(D+ -> mu+nu(mu)) = (0.122(-0.053)(+0.111) +/- 0.010)%, and a corresponding value of the pseudoscalar decay constant f(D+) = (371(-119)(+129) +/- 25) MeV. (c) 2005 Elsevier B.V. All rights reserved.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
WOS记录号WOS:000227813600003
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被引频次:27[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/226762
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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BES Collaboration. Direct measurement of the pseudoscalar decay constant f(D+)[J]. PHYSICS LETTERS B,2005,610(3-4):#REF!.
APA BES Collaboration.(2005).Direct measurement of the pseudoscalar decay constant f(D+).PHYSICS LETTERS B,610(3-4),#REF!.
MLA BES Collaboration."Direct measurement of the pseudoscalar decay constant f(D+)".PHYSICS LETTERS B 610.3-4(2005):#REF!.
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