Measurement of the branching fraction for γ (1S) → τ⁺τ^-

Authors

D. Cinabro, Harvard University
T. Liu, Harvard University
M. Saulnier, Harvard University
R. Wilson, Harvard University
H. Yamamoto, Harvard University
T. Bergfeld, University of Illinois Urbana-Champaign
B. I. Eisenstein, University of Illinois Urbana-Champaign
G. Gollin, University of Illinois Urbana-Champaign
B. Ong, University of Illinois Urbana-Champaign
M. Palmer, University of Illinois Urbana-Champaign
M. Selen, University of Illinois Urbana-Champaign
J. J. Thaler, University of Illinois Urbana-Champaign
K. W. Edwards, Carleton University
M. Ogg, Carleton University
A. Bellerive, Institute of Particle Physics
D. I. Britton, Institute of Particle Physics
E. R.F. Hyatt, Institute of Particle Physics
D. B. MacFarlane, Institute of Particle Physics
P. M. Patel, Institute of Particle Physics
B. Spaan, Institute of Particle Physics
A. J. Sadoff, Université McGill
R. Ammar, Institute of Particle Physics
P. Baringer, Institute of Particle Physics
A. Bean, Institute of Particle Physics
D. Besson, Institute of Particle Physics
D. Coppage, Institute of Particle Physics
N. Copty, Institute of Particle Physics
R. Davis, Institute of Particle Physics
N. Hancock, Institute of Particle Physics
M. Kelly, Institute of Particle Physics
S. Kotov, Institute of Particle Physics

Document Type

Article

Publication Date

12-1-1994

Abstract

We have studied the leptonic decay of the γ (1S) resonance into tau pairs using the CLEO II detector. A clean sample of tau pair events is identified via events containing two charged particles where exactly one of the particles is an identified electron. We find B(γ(1S) → τ+τ-) = (2.61±0.12-0.13+0.09)%. The result is consistent with expectations from lepton universality. © 1994.

Recommended Citation

Cinabro, D.; Liu, T.; Saulnier, M.; Wilson, R.; Yamamoto, H.; Bergfeld, T.; Eisenstein, B. I.; Gollin, G.; Ong, B.; Palmer, M.; Selen, M.; Thaler, J. J.; Edwards, K. W.; Ogg, M.; Bellerive, A.; Britton, D. I.; Hyatt, E. R.F.; MacFarlane, D. B.; Patel, P. M.; Spaan, B.; Sadoff, A. J.; Ammar, R.; Baringer, P.; Bean, A.; Besson, D.; Coppage, D.; Copty, N.; Davis, R.; Hancock, N.; Kelly, M.; and Kotov, S., "Measurement of the branching fraction for γ (1S) → τ⁺τ^-" (1994). Physics Faculty Publications. 31.
https://digitalcommons.bowdoin.edu/physics-faculty-publications/31