SciPost Submission Page

$τ$ lepton mass measurement at BESIII

by J. Y. Zhang

Submission summary

As Contributors:	Jianyong Zhang
Arxiv Link:	https://arxiv.org/abs/1812.10056v1
Date accepted:	2019-01-17
Date submitted:	2018-12-27
Submitted by:	Zhang, Jianyong
Submitted to:	SciPost Physics Proceedings
Proceedings issue:	The 15th International Workshop on Tau Lepton Physics (Amsterdam, 2018-09)
Discipline:	Physics
Subject area:	High-Energy Physics - Experiment
Approach:	Experimental

Abstract

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.