Study of D-0-(D)over-bar(0) mixing and D-0 doubly Cabibbo-suppressed decays

	Study of D-0-(D)over-bar(0) mixing and D-0 doubly Cabibbo-suppressed decays
	ALEPH Collaboration
刊名	PHYSICS LETTERS B
	1998
卷号	436 期号:1--2 页码:211-221
关键词	FINAL-STATE INTERACTIONS STANDARD PHYSICS MESONS FIELD SU(3)
通讯作者	Barate, R (reprint author), CNRS, IN2P3, LAPP, F-74019 Annecy Le Vieux, France.
英文摘要	Using a sample of four million hadronic Z events collected in ALEPH from 1991 to 1995, the decays D8+ --> D(0)pi(s)(+), with D-0 decaying to K- pi(+) or to K+ pi(-), are studied. The relative branching ratio B(D-0 --> K+ pi(-))/B(D-0 --> K- pi(+)) is measured to be (1.84 +/- 0.59(stat.) +/- 0.34(syst.))%. The two possible contributions to the D-0 --> K+ pi(-) decay, doubly Cabibbo-suppressed decays and DO-DO mixing, are disentangled by measuring the proper-time distribution of the reconstructed DO's. Assuming no interference between the two processes, the upper limit obtained on the mixing rate is 0.92% at 95% CL. The possible effect of interference between the two amplitudes is also assessed. (C) 1998 Elsevier Science B.V. All rights reserved.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000076404100026
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/211944]
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	ALEPH Collaboration. Study of D-0-(D)over-bar(0) mixing and D-0 doubly Cabibbo-suppressed decays[J]. PHYSICS LETTERS B,1998,436(1--2):211-221.
APA	ALEPH Collaboration.(1998).Study of D-0-(D)over-bar(0) mixing and D-0 doubly Cabibbo-suppressed decays.PHYSICS LETTERS B,436(1--2),211-221.
MLA	ALEPH Collaboration."Study of D-0-(D)over-bar(0) mixing and D-0 doubly Cabibbo-suppressed decays".PHYSICS LETTERS B 436.1--2(1998):211-221.