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Measurements of branching fractions of tau lepton decays with one or more K-S(0)
Belle Collaboration
2014
发表期刊PHYSICAL REVIEW D
卷号89期号:7
通讯作者Ryu, S (reprint author), Seoul Natl Univ, Seoul 151742, South Korea.
摘要We report measurements of branching fractions of tau lepton decays to final states with a K-S(0) meson using a 669 fb(-1) data sample accumulated with the Belle detector at the KEKB asymmetric-energy e(+)e(-) collider. The inclusive branching fraction is measured to be beta(tau(-) -> (KSX-)-X-0 nu(tau)) = (9.15 +/- 0.01 +/- 0.15) X 10(-3), where X- can be anything; the exclusive branching fractions are beta(tau(-) -> pi(-) K-S(0)nu(tau)) = (4.16 +/- 0.01 +/- 0.08) X 10(-3), beta(tau(-) -> K- K-S(0)nu(tau)) = (7.40 +/- 0.07 +/- 0.27) X 10(-4), beta(tau(-) -> pi(-) K-S(0)pi(0)nu(tau)) = (1.93 +/- 0.02 +/- 0.07) X 10(-3), beta(tau(-) -> K- K-S(0)pi(0)nu(tau)) = (7.48 +/- 0.10 +/- 0.37) X 10(-4), beta(tau(-) -> pi(-) (KSKS0)-K-0 nu(tau)) = (2.33 +/- 0.03 +/- 0.09) X 10(-4), beta(tau(-) -> pi(-) (KSKS0)-K-0 pi(0)nu(tau)) = (2.00 +/- 0.22 +/- 0.20) X 10(-5), where the first uncertainty is statistical and the second is systematic. For each mode, the accuracy is improved over that of pre-B-factory measurements by a factor ranging from five to ten. In tau(-) -> pi(-) (KSKS0)-K-0 pi(0)nu(tau) decays, clear signals for the intermediate states tau(-) -> pi(-) f(1)(1285)nu(tau) and tau(-) -> K*- K-S(0)pi(0)nu(tau) are observed.
关键词SPECTRAL FUNCTIONS FINAL-STATES BELLE DETECTOR KAONS IDENTIFICATION SIMULATION COLLISIONS KEKB
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.89.072009
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000334317200004
引用统计
被引频次:17[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/311005/213694
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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GB/T 7714
Belle Collaboration. Measurements of branching fractions of tau lepton decays with one or more K-S(0)[J]. PHYSICAL REVIEW D,2014,89(7).
APA Belle Collaboration.(2014).Measurements of branching fractions of tau lepton decays with one or more K-S(0).PHYSICAL REVIEW D,89(7).
MLA Belle Collaboration."Measurements of branching fractions of tau lepton decays with one or more K-S(0)".PHYSICAL REVIEW D 89.7(2014).
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