Measurement of vertical bar V-ub vertical bar from Inclusive Charmless Semileptonic B Decays

	Measurement of vertical bar V-ub vertical bar from Inclusive Charmless Semileptonic B Decays
	Belle Collaboration
刊名	PHYSICAL REVIEW LETTERS
	2010
卷号	104 期号:2
关键词	HEAVY-QUARK SYMMETRY MESON DECAYS CP-VIOLATION
通讯作者	Urquijo, P (reprint author), Univ Melbourne, Sch Phys, Melbourne, Vic 3010, Australia.
英文摘要	We present the partial branching fraction for inclusive charmless semileptonic B decays and the corresponding value of the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-ub vertical bar, using a multivariate analysis method to access similar to 90% of the B -> X(u)l nu phase space. This approach dramatically reduces the theoretical uncertainties from the b-quark mass and nonperturbative QCD compared to all previous inclusive measurements. The results are based on a sample of 657 X 10(6) B (B) over bar pairs collected with the Belle detector. We find that Delta B(B -> X(u)l nu; p(l)*(B) > 1.0 GeV/c) = 1.963X(1 +/- 0.088(stat) +/- 0.081(syst)) X 10(-3). Corresponding values of vertical bar V-ub vertical bar are extracted using several theoretical calculations.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000274002900012
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/212926]
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. Measurement of vertical bar V-ub vertical bar from Inclusive Charmless Semileptonic B Decays[J]. PHYSICAL REVIEW LETTERS,2010,104(2).
APA	Belle Collaboration.(2010).Measurement of vertical bar V-ub vertical bar from Inclusive Charmless Semileptonic B Decays.PHYSICAL REVIEW LETTERS,104(2).
MLA	Belle Collaboration."Measurement of vertical bar V-ub vertical bar from Inclusive Charmless Semileptonic B Decays".PHYSICAL REVIEW LETTERS 104.2(2010).