Re-fit of τ Mass Based on Improved Theoretical Calculations

WANG You-Kai; MO Xiao-Hu; YUAN Chang-Zheng; LIU Jue-Ping

Chinese Physics C> 2007, Vol. 31> Issue(4) : 325-331

Re-fit of τ Mass Based on Improved Theoretical Calculations

Institute of High Energy Physics, CAS, Beijing 100049, China2 School of Physics Science and Technology, Wuhan University, Wuhan 430072, China

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Abstract：
Recently many theoretical calculations have been made for the cross section of e⁺e^－→τ⁺τ^－ near the threshold, the accuracy of which is up to 10^－4. Based on one of the calculations, the e μ-contained final state data are refitted by utilizing the technique once adopted by BES collaboration for τ mass measurement. The systematic uncertainties are analyzed again and the final result of τ mass is 1776.98+0.44+0.12－0.51－0.13MeV.

References

[1]

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WANG You-Kai, MO Xiao-Hu, YUAN Chang-Zheng and LIU Jue-Ping. Re-fit of τ Mass Based on Improved Theoretical Calculations[J]. Chinese Physics C, 2007, 31(4): 325-331.

WANG You-Kai, MO Xiao-Hu, YUAN Chang-Zheng and LIU Jue-Ping. Re-fit of τ Mass Based on Improved Theoretical Calculations[J]. Chinese Physics C, 2007, 31(4): 325-331. shu

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Received: 2006-07-25
Revised: 2006-09-12

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沈阳化工大学材料科学与工程学院沈阳 110142

Re-fit of τ Mass Based on Improved Theoretical Calculations

Corresponding author: WANG You-Kai,

Institute of High Energy Physics, CAS, Beijing 100049, China2 School of Physics Science and Technology, Wuhan University, Wuhan 430072, China

Received Date: 2006-07-25

Accepted Date: 2006-09-12

Available Online: 2007-04-05

Abstract: Recently many theoretical calculations have been made for the cross section of e⁺e^－→τ⁺τ^－ near the threshold, the accuracy of which is up to 10^－4. Based on one of the calculations, the e μ-contained final state data are refitted by utilizing the technique once adopted by BES collaboration for τ mass measurement. The systematic uncertainties are analyzed again and the final result of τ mass is 1776.98+0.44+0.12－0.51－0.13MeV.

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Re-fit of τ Mass Based on Improved Theoretical Calculations

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