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Study of D+ -> K-pi(+)e(+)nu(e)
BESIII Collaboration
2016
发表期刊PHYSICAL REVIEW D
卷号94期号:3
摘要We present an analysis of the decay D+ -> K-pi(+)e(+)nu(e) based on data collected by the BESIII experiment at the psi(3770) resonance. Using a nearly background-free sample of 18262 events, we measure the branching fraction B(D+ -> K-pi+e+nu e) = (3.77 +/- 0.03 +/- 0.08)%. For 0.8 < m(K pi) < 1.0 GeV/c(2), the partial branching fraction is B(D+ -> K-pi+e+nu e)([0.8,1.0]) = (3.39 +/- 0.03 +/- 0.08)%. A partial wave analysis shows that the dominant (K) over bar* (892)degrees component is accompanied by an S-wave contribution accounting for (6.05 +/- 0.22 +/- 0.18)% of the total rate and that other components are negligible. The parameters of the (K) over bar* (892)degrees resonance and of the form factors based on the spectroscopic pole dominance predictions are also measured. We also present a measurement of the (K) over bar* (892)degrees helicity basis form factors in a model-independent way.
文章类型Article
DOI10.1103/PhysRevD.94.032001
关键词[WOS]MESON SEMILEPTONIC DECAYS ; FORM-FACTORS ; LATTICE ; HEAVY
语种英语
WOS记录号WOS:000380961000002
引用统计
被引频次:2[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/311005/260967
专题实验物理中心
作者单位中国科学院高能物理研究所
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BESIII Collaboration. Study of D+ -> K-pi(+)e(+)nu(e)[J]. PHYSICAL REVIEW D,2016,94(3).
APA BESIII Collaboration.(2016).Study of D+ -> K-pi(+)e(+)nu(e).PHYSICAL REVIEW D,94(3).
MLA BESIII Collaboration."Study of D+ -> K-pi(+)e(+)nu(e)".PHYSICAL REVIEW D 94.3(2016).
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