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Measurement of the time-dependent CP-violating asymmetry in B-0 -> K-S(0)pi(0)gamma decays
Belle Collaboration
2005
发表期刊PHYSICAL REVIEW LETTERS
卷号94期号:23
通讯作者Ushiroda, Y (reprint author), High Energy Accelerator Res Org, Tsukuba, Ibaraki, Japan.
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.
关键词BELLE DECAYS
学科领域Physics
DOI10.1103/PhysRevLett.94.231601
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000229858100013
引用统计
被引频次:11[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/311005/212566
专题实验物理中心
作者单位中国科学院高能物理研究所
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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).
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