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Title: Measurement of the mass of the [tau] lepton

Abstract

The mass of the [tau] lepton has been measured at the Beijing Electron-Positron Collider using the Beijing Spectrometer. A search near threshold for [ital e][sup +][ital e[minus]][r arrow][tau][sup +][tau][sup [minus]] was performed. Candidate events were identified by requiring that one [tau] decay via [tau][r arrow][ital e][nu][bar [nu]], and the other via [tau][r arrow][mu][nu][bar [nu]]. The mass value, obtained from a fit to the energy dependence of the [tau][sup +][tau][sup [minus]] cross section, is [ital m][sub [tau]]=1776.9[sub [minus]0.5][sup +0.4][plus minus]0.2 MeV.

Authors:
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Publication Date:
OSTI Identifier:
7012176
DOE Contract Number:  
AC02-76ER03069; AC35-89ER40486; FG05-92ER40736
Resource Type:
Journal Article
Journal Name:
Physical Review Letters; (United States)
Additional Journal Information:
Journal Volume: 69:21; Journal ID: ISSN 0031-9007
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; ELECTRON-POSITRON INTERACTIONS; ANNIHILATION; TAU PARTICLES; MASS; BRANCHING RATIO; CROSS SECTIONS; ERRORS; EXPERIMENTAL DATA; LEPTONIC DECAY; MUONS; BASIC INTERACTIONS; DATA; DECAY; ELECTROMAGNETIC INTERACTIONS; ELEMENTARY PARTICLES; FERMIONS; HEAVY LEPTONS; INFORMATION; INTERACTIONS; LEPTON-LEPTON INTERACTIONS; LEPTONS; NUMERICAL DATA; PARTICLE DECAY; PARTICLE INTERACTIONS; POSTULATED PARTICLES; WEAK INTERACTIONS; WEAK PARTICLE DECAY; 662430* - Properties of Leptons- (1992-); 662310 - Weak & Electromagnetic Interactions of Leptons- (1992-)

Citation Formats

Bai, J Z, Bardon, O, Becker-Szendy, R A, Burnett, T H, Campbell, J S, Chen, S J, Chen, S M, Chen, Y Q, Cheng, Z D, Coller, J A, Cowan, R F, Cui, H C, Cui, X Z, Ding, H L, Du, Z Z, Dunwoodie, W, Fang, C, Fero, M J, Gao, M L, Gao, S Q, Gao, W X, Gao, Y N, Gu, J H, Gu, S D, Gu, W X, Guo, Y N, Guo, Y Y, Han, Y, Hatanaka, M, He, J, Hitlin, D G, Hu, G Y, Hu, T, Huang, D Q, Huang, Y Z, Izen, J M, Jia, Q P, Jiang, C H, Jiang, Z J, Johnson, A S, Jones, L A, Kelsey, M H, Lai, Y F, Lang, P F, Lankford, A, Li, F, Li, J, Li, P Q, Li, Q M, Li, R B, Li, W, Li, W D, Li, W G, Li, Y S, Lin, S Z, Liu, H M, Liu, Q, Liu, R G, Liu, Y, Lowery, B, Lu, J G, Ma, D H, Ma, E C, Ma, J M, Mandelkern, M, Marsiske, H, Mao, H S, Mao, Z P, Meng, X C, Ni, H L, Pan, L J, Panetta, J H, Porter, F C, Prabhakar, E N, Qi, N D, Que, Y K, Quigley, J, Rong, G, Schmid, B, Schultz, J, Shank, J T, Shao, Y Y, Shen, D L, Sheng, H Y, Shi, H Z, Smith,, and BES Collaboration). Measurement of the mass of the [tau] lepton. United States: N. p., 1992. Web. doi:10.1103/PhysRevLett.69.3021.
Bai, J Z, Bardon, O, Becker-Szendy, R A, Burnett, T H, Campbell, J S, Chen, S J, Chen, S M, Chen, Y Q, Cheng, Z D, Coller, J A, Cowan, R F, Cui, H C, Cui, X Z, Ding, H L, Du, Z Z, Dunwoodie, W, Fang, C, Fero, M J, Gao, M L, Gao, S Q, Gao, W X, Gao, Y N, Gu, J H, Gu, S D, Gu, W X, Guo, Y N, Guo, Y Y, Han, Y, Hatanaka, M, He, J, Hitlin, D G, Hu, G Y, Hu, T, Huang, D Q, Huang, Y Z, Izen, J M, Jia, Q P, Jiang, C H, Jiang, Z J, Johnson, A S, Jones, L A, Kelsey, M H, Lai, Y F, Lang, P F, Lankford, A, Li, F, Li, J, Li, P Q, Li, Q M, Li, R B, Li, W, Li, W D, Li, W G, Li, Y S, Lin, S Z, Liu, H M, Liu, Q, Liu, R G, Liu, Y, Lowery, B, Lu, J G, Ma, D H, Ma, E C, Ma, J M, Mandelkern, M, Marsiske, H, Mao, H S, Mao, Z P, Meng, X C, Ni, H L, Pan, L J, Panetta, J H, Porter, F C, Prabhakar, E N, Qi, N D, Que, Y K, Quigley, J, Rong, G, Schmid, B, Schultz, J, Shank, J T, Shao, Y Y, Shen, D L, Sheng, H Y, Shi, H Z, Smith,, & BES Collaboration). Measurement of the mass of the [tau] lepton. United States. https://doi.org/10.1103/PhysRevLett.69.3021
Bai, J Z, Bardon, O, Becker-Szendy, R A, Burnett, T H, Campbell, J S, Chen, S J, Chen, S M, Chen, Y Q, Cheng, Z D, Coller, J A, Cowan, R F, Cui, H C, Cui, X Z, Ding, H L, Du, Z Z, Dunwoodie, W, Fang, C, Fero, M J, Gao, M L, Gao, S Q, Gao, W X, Gao, Y N, Gu, J H, Gu, S D, Gu, W X, Guo, Y N, Guo, Y Y, Han, Y, Hatanaka, M, He, J, Hitlin, D G, Hu, G Y, Hu, T, Huang, D Q, Huang, Y Z, Izen, J M, Jia, Q P, Jiang, C H, Jiang, Z J, Johnson, A S, Jones, L A, Kelsey, M H, Lai, Y F, Lang, P F, Lankford, A, Li, F, Li, J, Li, P Q, Li, Q M, Li, R B, Li, W, Li, W D, Li, W G, Li, Y S, Lin, S Z, Liu, H M, Liu, Q, Liu, R G, Liu, Y, Lowery, B, Lu, J G, Ma, D H, Ma, E C, Ma, J M, Mandelkern, M, Marsiske, H, Mao, H S, Mao, Z P, Meng, X C, Ni, H L, Pan, L J, Panetta, J H, Porter, F C, Prabhakar, E N, Qi, N D, Que, Y K, Quigley, J, Rong, G, Schmid, B, Schultz, J, Shank, J T, Shao, Y Y, Shen, D L, Sheng, H Y, Shi, H Z, Smith,, and BES Collaboration). 1992. "Measurement of the mass of the [tau] lepton". United States. https://doi.org/10.1103/PhysRevLett.69.3021.
@article{osti_7012176,
title = {Measurement of the mass of the [tau] lepton},
author = {Bai, J Z and Bardon, O and Becker-Szendy, R A and Burnett, T H and Campbell, J S and Chen, S J and Chen, S M and Chen, Y Q and Cheng, Z D and Coller, J A and Cowan, R F and Cui, H C and Cui, X Z and Ding, H L and Du, Z Z and Dunwoodie, W and Fang, C and Fero, M J and Gao, M L and Gao, S Q and Gao, W X and Gao, Y N and Gu, J H and Gu, S D and Gu, W X and Guo, Y N and Guo, Y Y and Han, Y and Hatanaka, M and He, J and Hitlin, D G and Hu, G Y and Hu, T and Huang, D Q and Huang, Y Z and Izen, J M and Jia, Q P and Jiang, C H and Jiang, Z J and Johnson, A S and Jones, L A and Kelsey, M H and Lai, Y F and Lang, P F and Lankford, A and Li, F and Li, J and Li, P Q and Li, Q M and Li, R B and Li, W and Li, W D and Li, W G and Li, Y S and Lin, S Z and Liu, H M and Liu, Q and Liu, R G and Liu, Y and Lowery, B and Lu, J G and Ma, D H and Ma, E C and Ma, J M and Mandelkern, M and Marsiske, H and Mao, H S and Mao, Z P and Meng, X C and Ni, H L and Pan, L J and Panetta, J H and Porter, F C and Prabhakar, E N and Qi, N D and Que, Y K and Quigley, J and Rong, G and Schmid, B and Schultz, J and Shank, J T and Shao, Y Y and Shen, D L and Sheng, H Y and Shi, H Z and Smith, and BES Collaboration)},
abstractNote = {The mass of the [tau] lepton has been measured at the Beijing Electron-Positron Collider using the Beijing Spectrometer. A search near threshold for [ital e][sup +][ital e[minus]][r arrow][tau][sup +][tau][sup [minus]] was performed. Candidate events were identified by requiring that one [tau] decay via [tau][r arrow][ital e][nu][bar [nu]], and the other via [tau][r arrow][mu][nu][bar [nu]]. The mass value, obtained from a fit to the energy dependence of the [tau][sup +][tau][sup [minus]] cross section, is [ital m][sub [tau]]=1776.9[sub [minus]0.5][sup +0.4][plus minus]0.2 MeV.},
doi = {10.1103/PhysRevLett.69.3021},
url = {https://www.osti.gov/biblio/7012176}, journal = {Physical Review Letters; (United States)},
issn = {0031-9007},
number = ,
volume = 69:21,
place = {United States},
year = {Mon Nov 23 00:00:00 EST 1992},
month = {Mon Nov 23 00:00:00 EST 1992}
}