$$τ$$ lepton mass measurement at BESIII

Journal Article · 18 February 2019 · SciPost Physics Proceedings

DOI: https://doi.org/10.21468/SciPostPhysProc.1.004 · OSTI ID:1494962

Zhang, Jianyong ^[1]

---

1. Chinese Academy of Sciences

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

• Sponsoring Organization: USDOE
• Grant/Contract Number: FG02-04ER41291; FG02-05ER41374; FG02-94ER40823; SC0010118
• OSTI ID: 1494962
• Journal Information: SciPost Physics Proceedings, Journal Name: SciPost Physics Proceedings Journal Issue: 1
• Publisher: Stichting SciPostCopyright Statement
• Country of Publication: Country unknown/Code not available
• Language: English