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$τ$ lepton mass measurement at BESIII

by J. Y. Zhang

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Submission summary

Authors (as registered SciPost users): Jianyong Zhang
Submission information
Preprint Link:  (pdf)
Date accepted: 2019-01-17
Date submitted: 2018-12-27 01:00
Submitted by: Zhang, Jianyong
Submitted to: SciPost Physics Proceedings
Proceedings issue: The 15th International Workshop on Tau Lepton Physics (TAU2018)
Ontological classification
Academic field: Physics
  • High-Energy Physics - Experiment
Approach: Experimental


In order to obtain the mass of $\tau$ lepton at BESIII precisely, a beam energy measurement system was built at BEPCII. A scenario for high precision $\tau$ mass measurement was put forth before data taken. More than 130 $pb^{-1}$ $\tau$ mass scan data were collected in April 2018, and the uncertainty of $m_{\tau}$ is expected to be less than 100 keV.

Published as SciPost Phys. Proc. 1, 004 (2019)

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