Chinese Physics C > 1994, Vol. 18 > Issue(S3): 215-222

Improvements of the L3 TEC Track Resolution of Vertex

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China;
2. ETH-Z, Institut fur Hochenergiephysik, 8093-Zurich, Switzerland

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

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[11]	WANG Ji-Ke,MAO Ze-Pu,BIAN Jian-Ming,CAO Guo-Fu. BESⅢ track fitting algorithm. Chinese Physics C, 2009, 33(10): 870-879.doi:10.1088/1674-1137/33/10/010
[12]	LIU Qiu-Guang,ZANG Shi-Lei,LI Wei-Guo,MAO Ze-Pu,BIAN Jian-Ming,CAO Guo-Fu,CAO Xue-Xiang,CHEN Shen-Jian,DENG Zi-Yan,FU Cheng-Dong,GAO Yuan-Ning,HE Kang-Lin,HE Miao,HUA Chun-Fei,HUANG Bin,HUANG Xing-Tao,JI Xiao-Bin,LI Fei,LI Hai-Bo,LI Wei-Dong,LIANG Yu-Tie,LIU Chun-Xiu,LIU Huai-Min,LIU Suo,LIU Ying-Jie,MA Qiu-Mei,MA Xiang,MAO Ya-Jun,MO Xiao-Hu,PAN Ming-Hua,PANG Cai-Ying,PING Rong-Gang,QIN Gang,QIN Ya-Hong,QIU Jin-Fa,SUN Sheng-Sen,SUN Yong-Zhao,WANG Ji-Ke,WANG Liang-Liang,,,,,,,,,,,. Track reconstruction using the TSF method for the BESⅢ main drift chamber. Chinese Physics C, 2008, 32(7): 565-571.doi:10.1088/1674-1137/32/7/011
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[18]	Yang Changgen,Chen Hesheng,Jin Bingnian,Tang Xiaowei. Improvements of The L3 TEC Track Resolution at Vertex. Chinese Physics C, 1994, 18(8): 687-693.
[19]	Hu Hongliang,Yu Yue,Xiong Chuansheng. Vertex Operators and Different String Interaction Pictures. Chinese Physics C, 1988, 12(S4): 365-372.
[20]	ZHU Yong-Sheng. MONTE-CARLO CALCULATION ON ACHIEVABLE ACCURACY OF TAU LIFETIME MEASUREMENT BY USING TEC TYPE VERTEX CHAMBER IN e⁺e^－INTERACTION AT CENTER OF MASS ENERGY √s=40GeV. Chinese Physics C, 1984, 8(5): 513-522.

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Yang Changgen, Chen Hesheng, Jin Bingnian, Tang Xiaowei and M. Pohl. Improvements of the L3 TEC Track Resolution of Vertex[J]. Chinese Physics C, 1994, 18(S3): 215-222.

Yang Changgen, Chen Hesheng, Jin Bingnian, Tang Xiaowei and M. Pohl. Improvements of the L3 TEC Track Resolution of Vertex[J]. Chinese Physics C, 1994, 18(S3): 215-222. shu

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Received: 1993-04-15

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Supported by the National Natural Science Foundation of China.

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通讯作者:陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Improvements of the L3 TEC Track Resolution of Vertex

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, China;

2. ETH-Z, Institut fur Hochenergiephysik, 8093-Zurich, Switzerland

Received Date:1993-04-15

Fund Project:Supported by the National Natural Science Foundation of China.

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

Improvements of the L3 TEC Track Resolution of Vertex

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