A Semi-Experimental Method to Determine the Efficiency of Selecting ττ→eμ(v)

  • The efficiency of event selection is an important parameter in the measurement of r lepton mass.In our study we use so-called semi-experimental method in which we combine M.C. events and experimental data. With this method the efficiency of selectingττ→eμ(v) 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 τlepton mass.
  • [1] A.Pich,TAU PHYSICS:CERN-TH-6237/91.[2]Stauislaw Jadach et.al,KORALB:CEKN-TH-5855/90;Stanislaw Jadach,TAUOLA:CEKN-TH-5856/90.[3]吕锋、曾吉阳,J/ψ数据中e、μ和π样本的选取,BES内部报告,1992.1.[4]伍健,τ轻子质量测量中τ事例选择及eμ道选择效率的确定,中国科技大学学士毕业论文,1992.7.[5]吕锋,ττ→eμ(v)事例选择,BES内部报告,1992.1.[6]J.Z.Bai et al.,Phys.Rev.Lett.,69(1992)3021.
  • [1] A.Pich,TAU PHYSICS:CERN-TH-6237/91.[2]Stauislaw Jadach et.al,KORALB:CEKN-TH-5855/90;Stanislaw Jadach,TAUOLA:CEKN-TH-5856/90.[3]吕锋、曾吉阳,J/ψ数据中e、μ和π样本的选取,BES内部报告,1992.1.[4]伍健,τ轻子质量测量中τ事例选择及eμ道选择效率的确定,中国科技大学学士毕业论文,1992.7.[5]吕锋,ττ→eμ(v)事例选择,BES内部报告,1992.1.[6]J.Z.Bai et al.,Phys.Rev.Lett.,69(1992)3021.
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Chen Hongfang, LV Feng, Tong Cuoliang, Wu Jian, Wu Yigen, Xu Mianhai, Xu Yadi, Xu Mingkang, Ye Shuwei, Yu Yankua, Zeng Jiyang, Zhong Chongchang and Zhu Hongguo. A Semi-Experimental Method to Determine the Efficiency of Selecting ττ→eμ(v)[J]. Chinese Physics C, 1994, 18(7): 577-582.
Chen Hongfang, LV Feng, Tong Cuoliang, Wu Jian, Wu Yigen, Xu Mianhai, Xu Yadi, Xu Mingkang, Ye Shuwei, Yu Yankua, Zeng Jiyang, Zhong Chongchang and Zhu Hongguo. A Semi-Experimental Method to Determine the Efficiency of Selecting ττ→eμ(v)[J]. Chinese Physics C, 1994, 18(7): 577-582. shu
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A Semi-Experimental Method to Determine the Efficiency of Selecting ττ→eμ(v)

    Corresponding author: Chen Hongfang,
  • Institute of High Energy Physics,Beijing 1000392 Department of modern physics,USTC, Hefei 2300263 Department,of Physics,Hangzhou Uniuersity, Zhejiang, 310028

Abstract: The efficiency of event selection is an important parameter in the measurement of r lepton mass.In our study we use so-called semi-experimental method in which we combine M.C. events and experimental data. With this method the efficiency of selectingττ→eμ(v) 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 τlepton mass.

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