Evidence for the Suppressed Decay B- -> DK-, D -> K+pi-

	Evidence for the Suppressed Decay B- -> DK-, D -> K+pi-
	Belle Collaboration
刊名	PHYSICAL REVIEW LETTERS
	2011
卷号	106 期号:23
关键词	CP-VIOLATION BELLE
通讯作者	Horii, Y (reprint author), Tohoku Univ, Sendai, Miyagi 980, Japan.
英文摘要	The suppressed decay chain B- -> DK-, D -> K+pi(-), where D indicates a (D) over bar (0) or D-0 state, provides important information on the CP-violating angle phi(3). We measure the ratio R-DK of the decay rates to the favored mode B- -> DK-, D -> K+pi(-) to be R-DK = [1.63(-0.41)(+0.44)(stat)(-0.13)(+0.07)(syst)] x 10(-2), which indicates the first evidence of the signal with a significance of 4.1 sigma. We also measure the asymmetry A(DK) between the charge-conjugate decays to be A(DK) = -0.39(-0.28)(+0.26)(stat)(-0.03)(+0.04)(syst). The results are based on the full 772 x 10(6) B (B) over bar pair data sample collected at the Gamma(4S) resonance with the Belle detector.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000291465400007
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/213061]
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	Belle Collaboration. Evidence for the Suppressed Decay B- -> DK-, D -> K+pi-[J]. PHYSICAL REVIEW LETTERS,2011,106(23).
APA	Belle Collaboration.(2011).Evidence for the Suppressed Decay B- -> DK-, D -> K+pi-.PHYSICAL REVIEW LETTERS,106(23).
MLA	Belle Collaboration."Evidence for the Suppressed Decay B- -> DK-, D -> K+pi-".PHYSICAL REVIEW LETTERS 106.23(2011).