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Measurement of the mass of the τ lepton

Bai, J. Z. and Hatanaka, M. and Hitlin, D. G. and Jones, L. A. and Kelsey, M. H. and Panetta, J. H. and Porter, F. C. and Prabhakar, E. N. (1992) Measurement of the mass of the τ lepton. Physical Review Letters, 69 (21). pp. 3021-3024. ISSN 0031-9007. doi:10.1103/PhysRevLett.69.3021.

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The mass of the τ lepton has been measured at the Beijing Electron-Positron Collider using the Beijing Spectrometer. A search near threshold for e^+e^-→τ^+τ^- was performed. Candidate events were identified by requiring that one τ decay via τ→eνν¯, and the other via τ→μνν¯. The mass value, obtained from a fit to the energy dependence of the τ^+τ^- cross section, is m_τ=1776.9_(-0.5)^(+0.4)±0.2 MeV.

Item Type:Article
Related URLs:
URLURL TypeDescription
Hitlin, D. G.0000-0003-4028-6982
Porter, F. C.0000-0003-1948-8889
Additional Information:© 1992 The American Physical Society. Received 7 August 1992. We would like to thank the BEPC staff and the Computer Center at IHEP for their outstanding efforts, and also Y. S. Tsai and J. M. Wu for helpful discussions about the r ^+ r ^- cross section near threshold. This work was supported in part by the National Natural Science Foundation of China under Contract No. 19290400 OHEP); by the Department of Energy under Contracts No. DE-AC03-76SF00515 (SLAC), No. DE-FG03- 92ER40701 (Caltech), No. DE-FG03-91 ER40679 (UC Irvine), No. DE-FG02-91 ER40676 (Boston University), No. DE-AC02-76ER03069 (MIT), No. DE-AC35- 89ER40486 (SSC), and No. DE-FG05-92ER40736 (UT Dallas); by the Texas National Research Laboratory Commission (Rocky Mountain Consortium for High Energy Physics) under Contracts No. RGFY91 85 and No. RGFY9285 (Colorado State); and by the National Science Foundation (University of Washington).
Funding AgencyGrant Number
National Natural Science Foundation of China19290400
Department of Energy (DOE)DE-AC03-76SF00515
Department of Energy (DOE)DE-FG03-92-ER40701
Department of Energy (DOE)DE-FG03-91 ER40679
Department of Energy (DOE)DE-FG02-91 ER40676
Department of Energy (DOE)DE-AC02-76ER03069
Department of Energy (DOE)DE-AC35-89ER40486
Department of Energy (DOE)DE-FG05-92ER40736
Texas National Research Laboratory CommissionRGFY91B5
Texas National Research Laboratory CommissionRGFY92B5
Issue or Number:21
Classification Code:PACS: 14.60.Jj, 13.10.+q
Record Number:CaltechAUTHORS:20120309-143350443
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Official Citation:Measurement of the mass of the τ lepton J. Z. Bai et al. pp. 3021-3024
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:29676
Deposited By: Ruth Sustaita
Deposited On:12 Mar 2012 21:16
Last Modified:09 Nov 2021 19:27

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