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Measurement of the topological and hadronic decay branching fractions of the tau lepton with the L3 detector at LEP
Chen GM(陈国明); Chen, GM
2001
发表期刊NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
卷号98页码:#REF!
通讯作者Chen, GM (reprint author), Acad Sinica, Inst High Energy Phys, POB 918, Beijing 100039, Peoples R China.
摘要Using the data collected with the L3 detector at LEP during 1992-1995 run at the Z(o) peak, corresponding to an integrated luminosity of 92.63 pb(-1), the topological and hadronic tau decay branching fractions are measured. Photon conversion, fake photon and backlash tracks are studied and rejected in the analysis. The decay channels are identified using a set of neural networks. The topological tau decay branching fractions are B(tau --> 1-prong) = 85.14 +/- 0.27 +/- 0.17%, B(tau --> 3-prong) = 14.63 +/- 0.13 +/- 0.10% and B(tau --> 5-prong) = 0.23 +/- 0.01 +/- 0.05%. The branching fractions of tau hadronic decays are determined: BR.(tau --> hv)=(12.51 +/- 0.12 +/- 0.13)%, BR(tau --> h pi (o)nu)=(25.38 +/- 0.18 +/- 0.14)% ,BR(tau --> h2 pi (o)nu)=(8.98 +/- 0.21 +/- 0.19)% ,BR(tau --> h greater than or equal to 3 pi (o)nu)=(1.77 +/- 0.14 +/- 0.15)% ,BR(tau --> 3hv)=(9.11 +/- 0.15 +/- 0.08)% ,BR(tau --> 3h pi (o)nu)=(4.77 +/- 0.19 +/- 0.10)% ,BR(tau --> 3h greater than or equal to 2 pi (o)nu)=(0.45 +/- 0.10 +/- 0.11)%, where the first error is statistical and the second systematic.
文章类型Article; Proceedings Paper
学科领域Physics
DOI10.1016/S0920-5632(01)01224-5
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:000168211000025
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被引频次:1[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/311005/226908
专题粒子天体物理中心
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Chen GM,Chen, GM. Measurement of the topological and hadronic decay branching fractions of the tau lepton with the L3 detector at LEP[J]. NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS,2001,98:#REF!.
APA 陈国明,&Chen, GM.(2001).Measurement of the topological and hadronic decay branching fractions of the tau lepton with the L3 detector at LEP.NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS,98,#REF!.
MLA 陈国明,et al."Measurement of the topological and hadronic decay branching fractions of the tau lepton with the L3 detector at LEP".NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS 98(2001):#REF!.
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