Measurements of the absolute branching fractions for D ->(K)over-bar-pi e(+)nu(e), D ->(K)over-bar*e+nu(e) and determination of Gamma(D+->(K)over-bar*(0)e+nu(e))/Gamma(D+->(K)over-bar(0)e+nu(e))

	*Measurements of the absolute branching fractions for D ->(K)over-bar-pi e(+)nu(e), D ->(K)over-bare+nu(e) and determination of Gamma(D+->(K)over-bar(0)e+nu(e))/Gamma(D+->(K)over-bar(0)e+nu(e))*
	BES Callaboration
刊名	EUROPEAN PHYSICAL JOURNAL C
	2006
卷号	47 期号:1 页码:31-37
关键词	SEMILEPTONIC DECAYS MESONS CHARM
通讯作者	Ablikim, M (reprint author), Inst High Energy Phys, Beijing 100049, Peoples R China.
英文摘要	Using the data of about 33 pb(-1) collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we have studied the exclusive semileptonic decays D+ -> K-pi(+)e(+)nu(e), D-0 -> (K) over bar (0)pi(-)e(+)nu(e), D+ -> (K) over bar (0)e(+)nu(e) and D-0 -> K(-)e(+)nu(e). The absolute branching fractions for the decays are measured to be BF(D+ -> K-pi(+)e(+)v(e)) = (3.50 +/- 0.75 +/- 0.27)%, BF(D-0 -> (K) over bar (0)pi(-)e(+)v(e)) = (2.61 +/- 1.04 +/- 0.28)%, BF(D+ -> (K) over bar (0)pi(+)e(+)nu(e)) = (5.06 +/- 1.21 +/- 0.40)% and BF(D-0 -> (K) over bar (0)pi(-)e(+)nu(e)) = (2.87 +/- 1.48 +/- 0.39)%. The ratio of the vector to pseudoscalar semileptonic decay rates Gamma(D+ -> (K) over bar (0)e+nu(e))/Gamma(D+ -> (K) over bar (0)e+nu(e)) is determined to be 0.57 +/- 0.17 +/- 0.02.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000241559700003
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/212731]
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	BES Callaboration. Measurements of the absolute branching fractions for D ->(K)over-bar-pi e(+)nu(e), D ->(K)over-bare+nu(e) and determination of Gamma(D+->(K)over-bar(0)e+nu(e))/Gamma(D+->(K)over-bar(0)e+nu(e))[J]. EUROPEAN PHYSICAL JOURNAL C,2006,47(1):31-37.
APA	BES Callaboration.(2006).Measurements of the absolute branching fractions for D ->(K)over-bar-pi e(+)nu(e), D ->(K)over-bare+nu(e) and determination of Gamma(D+->(K)over-bar(0)e+nu(e))/Gamma(D+->(K)over-bar(0)e+nu(e)).EUROPEAN PHYSICAL JOURNAL C,47(1),31-37.
MLA	BES Callaboration."Measurements of the absolute branching fractions for D ->(K)over-bar-pi e(+)nu(e), D ->(K)over-bare+nu(e) and determination of Gamma(D+->(K)over-bar(0)e+nu(e))/Gamma(D+->(K)over-bar(0)e+nu(e))".EUROPEAN PHYSICAL JOURNAL C 47.1(2006):31-37.