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Measurement of the tau lepton lifetime with the three-dimensional impact parameter method
ALEPH Collaboration
1997
发表期刊ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS
卷号74期号:3页码:#REF!
通讯作者Barate, R (reprint author), IN2P3, CNRS, PHYS PARTICULES LAB, F-74019 ANNECY LE VIEUX, FRANCE.
文章类型Article
摘要A new method is presented for the measurement of the mean tau lepton lifetime using events in which tau's are pair-produced and both tau's decay to hadrons and nu(tau). Based on the correlation between the two tau's produced at a symmetric e(+)e(-) collider, the 3DIP method relies on the three-dimensional information from a double-sided vertex detector and on kinematic constraints for the precise measurement of the tau decay angles. Using the data collected from 1992 to 1994 with the ALEPH detector at LEP, a tau lifetime of 288.0 +/- 3.1 +/- 1.3 fs is obtained from the sample in which both tau's decay to one charged track, and 292.8 +/- 5.6 +/- 3.0 fs from the sample in which one tau decays to one prong and the other to three prongs. The results show small statistical correlations with those derived from other methods. When combined with the previously published ALEPH measurements, the resulting tau lifetime is 291.2 +/- 2.0 +/- 1.2 fs.
学科领域Physics
DOI10.1007/s002880050401
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:A1997XA99200001
引用统计
被引频次:6[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/311005/227608
专题实验物理中心
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ALEPH Collaboration. Measurement of the tau lepton lifetime with the three-dimensional impact parameter method[J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS,1997,74(3):#REF!.
APA ALEPH Collaboration.(1997).Measurement of the tau lepton lifetime with the three-dimensional impact parameter method.ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS,74(3),#REF!.
MLA ALEPH Collaboration."Measurement of the tau lepton lifetime with the three-dimensional impact parameter method".ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 74.3(1997):#REF!.
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