Analysis of D+ -> (K)over-bar(0)e(+)nu(e) and D+ -> pi(0)e(+)nu(e) semileptonic decays

doi:10.1103/PhysRevD.96.012002

	Analysis of D+ -> (K)over-bar(0)e(+)nu(e) and D+ -> pi(0)e(+)nu(e) semileptonic decays
	BESIII Collaboration
刊名	PHYSICAL REVIEW D
	2017
卷号	96 期号:1 页码:12002
ISSN号	2470-0010
DOI	10.1103/PhysRevD.96.012002
文献子类	Article
英文摘要	Using 2.93 fb(-1) of data taken at 3.773 GeV with the BESIII detector operated at the BEPCII collider, we study the semileptonic decays D+ -> (K) over bar (0)e(+)nu(e) and D+ -> pi(0)e(+)nu(e). We measure the absolute decay branching fractions B(D+ -> (K) over bar (0)e(+)nu(e)) = (8.60 +/- 0.06 +/- 0.15) x 10(-2) and B(D+ -> pi(0)e(+)nu(e)) = (3.63 +/- 0.08 +/- 0.05) x 10(-3), where the first uncertainties are statistical and the second systematic. We also measure the differential decay rates and study the form factors of these two decays. With the values of \|V-cs\| and \|V-cd\| from Particle Data Group fits assuming Cabibbo-Kobayashi-Maskawa (CKM) unitarity, we obtain the values of the form factors at q(2) = 0, f(+)(K)(0) = 0.725 +/- 0.004 +/- 0.012, and f(+)(pi)(0) = 0.622 +/- 0.012 +/- 0.003. Taking input from recent lattice QCD calculations of these form factors, we determine values of the CKM matrix elements \|V-cs\| = 0.944 +/- 0.005 +/- 0.015 +/- 0.024 and \|V-cd\| = 0.210 +/- 0.004 +/- 0.001 +/- 0.009, where the third uncertainties are theoretical.
电子版国际标准刊号	2470-0029
WOS关键词	FORM-FACTORS ; E(+)E(-) ; HEAVY
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
WOS记录号	WOS:000406295500001
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/284511]
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	BESIII Collaboration. Analysis of D+ -> (K)over-bar(0)e(+)nu(e) and D+ -> pi(0)e(+)nu(e) semileptonic decays[J]. PHYSICAL REVIEW D,2017,96(1):12002.
APA	BESIII Collaboration.(2017).Analysis of D+ -> (K)over-bar(0)e(+)nu(e) and D+ -> pi(0)e(+)nu(e) semileptonic decays.PHYSICAL REVIEW D,96(1),12002.
MLA	BESIII Collaboration."Analysis of D+ -> (K)over-bar(0)e(+)nu(e) and D+ -> pi(0)e(+)nu(e) semileptonic decays".PHYSICAL REVIEW D 96.1(2017):12002.