A Semi-experimental Method to Determine the Efficiency of ττ→eμ(υ) Event Selection

Chen Hongfang; L&#252; Feng; Tong Guoliang; Wu Jian; Wu Yigen; Xu Mianhai; Xu Mingkang; Xu Yadi; Ye Shuwei; Yu Yanhua; Zeng Jiyang; Zhong Chongchang; Zhu Hongguo

Chinese Physics C> 1994, Vol. 18> Issue(S2) : 135-140

A Semi-experimental Method to Determine the Efficiency of ττ→eμ(υ) Event Selection

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing;
2. Department of Modem Physics, USTC. Hefei, China;
3. Department of Physics, Hangzhou University, Zhejiang, China

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Abstract：
The efficiency of event selection is an important parameter in the measurement of the r lepton mass. In our study we used so-called semi-experimental method in which we combine M.C. and experimental data. With this method the efficiency of selecting ττ→eμ(υ) is obtained as (14.5±0.7±0.8)%,and various relevant corrections are discussed. The result is consistent with that derived from two-parameter fitting of the τ lepton mass.
- measurement of the τ lepton mass ,
- efficiency of event selection ,
- semi-experimentai method

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Chen Hongfang, Lü Feng, Tong Guoliang, Wu Jian, Wu Yigen, Xu Mianhai, Xu Mingkang, Xu Yadi, Ye Shuwei, Yu Yanhua, Zeng Jiyang, Zhong Chongchang and Zhu Hongguo. A Semi-experimental Method to Determine the Efficiency of ττ→eμ(υ) Event Selection[J]. Chinese Physics C, 1994, 18(S2): 135-140.

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Received: 1993-04-08

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Supported by the National Natural Science Foundation of China.

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沈阳化工大学材料科学与工程学院沈阳 110142

A Semi-experimental Method to Determine the Efficiency of ττ→eμ(υ) Event Selection

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing;
2. Department of Modem Physics, USTC. Hefei, China;
3. Department of Physics, Hangzhou University, Zhejiang, China

Received Date: 1993-04-08

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

Abstract: The efficiency of event selection is an important parameter in the measurement of the r lepton mass. In our study we used so-called semi-experimental method in which we combine M.C. and experimental data. With this method the efficiency of selecting ττ→eμ(υ) is obtained as (14.5±0.7±0.8)%,and various relevant corrections are discussed. The result is consistent with that derived from two-parameter fitting of the τ lepton mass.