Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays

	Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays
	Belle Collaboration
刊名	PHYSICAL REVIEW LETTERS
	2005
卷号	94 期号:23
关键词	BELLE DECAYS
通讯作者	Ushiroda, Y (reprint author), High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan.
英文摘要	We present a new measurement of CP-violation parameters in B-0-> K(S)(0)pi(0)gamma decay based on a sample of 275x10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB energy-asymmetric e(+)e(-) collider. One of the B mesons is fully reconstructed in the B-0-> K(S)(0)pi(0)gamma decay. The flavor of the accompanying B meson is identified from its decay products. CP-violation parameters are obtained from the asymmetry in the distribution of the proper time intervals between the two B decays. We obtain S(KS)(0)pi(0)gamma=-0.58(-0.38)(+0.46)(stat)+/- 0.11(syst) and A(KS)(0)pi(0)gamma=+0.03 +/- 0.34(stat)+/- 0.11(syst), for the K(S)(0)pi(0) invariant mass covering the full range up to 1.8 GeV/c(2). We also measure the CP-violation parameters for the case B-0-> K-0(-> K(S)(0)pi(0))gamma and obtain S(K)(0)gamma=-0.79(-0.50)(+0.63)(stat)+/- 0.10(syst) for A(K)(*0)gamma fixed at 0.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
收录类别	SCI
语种	英语
WOS记录号	WOS:000229858100013
公开日期	2016-02-26
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/212566]
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 the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays[J]. PHYSICAL REVIEW LETTERS,2005,94(23).
APA	Belle Collaboration.(2005).Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays.PHYSICAL REVIEW LETTERS,94(23).
MLA	Belle Collaboration."Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays".PHYSICAL REVIEW LETTERS 94.23(2005).