Measurement of the τ-lepton mass

Authors

R. Balest, University of Colorado Boulder
M. Daoudi, University of Colorado Boulder
W. T. Ford, University of Colorado Boulder
D. R. Johnson, University of Colorado Boulder
K. Lingel, University of Colorado Boulder
M. Lohner, University of Colorado Boulder
P. Rankin, University of Colorado Boulder
J. G. Smith, University of Colorado Boulder
J. P. Alexander, University of Colorado Boulder
C. Bebek, University of Colorado Boulder
K. Berkelman, University of Colorado Boulder
D. Besson, University of Colorado Boulder
T. E. Browder, University of Colorado Boulder
D. G. Cassel, University of Colorado Boulder
H. A. Cho, University of Colorado Boulder
D. M. Coffman, University of Colorado Boulder
P. S. Drell, University of Colorado Boulder
R. Ehrlich, University of Colorado Boulder
R. S. Galik, University of Colorado Boulder
M. Garcia-Sciveres, University of Colorado Boulder
B. Geiser, University of Colorado Boulder
B. Gittelman, University of Colorado Boulder
S. W. Gray, University of Colorado Boulder
D. L. Hartill, University of Colorado Boulder
B. K. Heltsley, University of Colorado Boulder
K. Honscheid, University of Colorado Boulder
C. D. Jones, University of Colorado Boulder
J. Kandaswamy, University of Colorado Boulder
N. Katayama, University of Colorado Boulder
P. C. Kim, University of Colorado Boulder
D. L. Kreinick, University of Colorado Boulder

Document Type

Article

Publication Date

1-1-1993

Abstract

Using data from the CLEO II detector at CESR, we measure the τ-lepton mass by exploiting the unique kinematics of events in which both τ's decay hadronically. The result is mτ=1777.8±0.7±1.7 MeV/c2. By comparing our result with other measurements near τ-pair threshold, we extract an upper limit on the τ-neutrino mass of 75 MeV/c2 at 95% confidence level. © 1993 The American Physical Society.

Recommended Citation

Balest, R.; Daoudi, M.; Ford, W. T.; Johnson, D. R.; Lingel, K.; Lohner, M.; Rankin, P.; Smith, J. G.; Alexander, J. P.; Bebek, C.; Berkelman, K.; Besson, D.; Browder, T. E.; Cassel, D. G.; Cho, H. A.; Coffman, D. M.; Drell, P. S.; Ehrlich, R.; Galik, R. S.; Garcia-Sciveres, M.; Geiser, B.; Gittelman, B.; Gray, S. W.; Hartill, D. L.; Heltsley, B. K.; Honscheid, K.; Jones, C. D.; Kandaswamy, J.; Katayama, N.; Kim, P. C.; and Kreinick, D. L., "Measurement of the τ-lepton mass" (1993). Physics Faculty Publications. 59.
https://digitalcommons.bowdoin.edu/physics-faculty-publications/59