Improved constraints on D-0-(D)over-bar(0) mixing in D-0 -> K+ pi(-) decays from the Belle detector
Belle Collaboration
刊名PHYSICAL REVIEW LETTERS
2006
卷号96期号:15
关键词SEARCH D-0
学科分类Physics
DOI10.1103/PhysRevLett.96.151801
通讯作者Zhang, LM (reprint author), Univ Sci & Technol China, Hefei 230026, Peoples R China.
英文摘要We report the results of a search for D-0-D-0 mixing in D-0-> K(+)pi(-) decays based on 400 fb(-1) of data accumulated by the Belle detector at KEKB. Both assuming CP conservation and allowing for CP violation, we fit the decay-time distribution for the mixing parameters x(') and y('), as well as for the parameter R-D, the ratio of doubly Cabibbo-suppressed decays to Cabibbo-favored decays. The 95% confidence level region in the (x('2),y(')) plane is obtained using a frequentist method. Assuming CP conservation, we find x('2)< 0.72x10(-3) and -9.9x10(-3)< y(')< 6.8x10(-3) at the 95% confidence level; these are the most stringent constraints on the mixing parameters to date. The no-mixing point (0,0) has a confidence level of 3.9%. Assuming no mixing, we measure R-D=(0.377 +/- 0.008 +/- 0.005)%.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
语种英语
WOS记录号WOS:000236969700016
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被引频次:69[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/311005/212654
专题中国科学院高能物理研究所_实验物理中心_期刊论文
作者单位中国科学院高能物理研究所
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Belle Collaboration. Improved constraints on D-0-(D)over-bar(0) mixing in D-0 -> K+ pi(-) decays from the Belle detector[J]. PHYSICAL REVIEW LETTERS,2006,96(15).
APA Belle Collaboration.(2006).Improved constraints on D-0-(D)over-bar(0) mixing in D-0 -> K+ pi(-) decays from the Belle detector.PHYSICAL REVIEW LETTERS,96(15).
MLA Belle Collaboration."Improved constraints on D-0-(D)over-bar(0) mixing in D-0 -> K+ pi(-) decays from the Belle detector".PHYSICAL REVIEW LETTERS 96.15(2006).
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