Improvements of The L3 TEC Track Resolution at Vertex

Yang Changgen; Chen Hesheng; Jin Bingnian; Tang Xiaowei

Chinese Physics C> 1994, Vol. 18> Issue(8) : 687-693

Improvements of The L3 TEC Track Resolution at Vertex

Institute of High Energy Paysics,Acadamia Sinica,Beijing 1000392 ETH-Z, Institute fur Hochenergiephysik,8093-Zurich,Switzerland

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Abstract：
Two methods are used to improve the L3 TEC resolution at track vertex.First,refit the lepton tracks by constrained curvature from high precision measurements on electron energy and muon momenta. Second, correct the average value of track offsets in each half sector of TEC.Combined methods improve the lepton track resolution at vertex from 137μm to 60μm.

References

[1]	L3Colla,Nucl Inst.and Meth.A289（1990）35.[2]杨长根，“τ轻子寿命测量”,高能物理研究所博士论文，1993.[3]B.Ronne,CERN64-13. [4]L3Colla,CERN-PPE/93-31.

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Yang Changgen, Chen Hesheng, Jin Bingnian and Tang Xiaowei. Improvements of The L3 TEC Track Resolution at Vertex[J]. Chinese Physics C, 1994, 18(8): 687-693.

Yang Changgen, Chen Hesheng, Jin Bingnian and Tang Xiaowei. Improvements of The L3 TEC Track Resolution at Vertex[J]. Chinese Physics C, 1994, 18(8): 687-693. shu

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Received: 1900-01-01
Revised: 1900-01-01

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