Title

Study of the five-charged-pion decay of the τ lepton

Authors

D. Gibaut, Virginia Polytechnic Institute and State University
K. Kinoshita, Virginia Polytechnic Institute and State University
B. Barish, Virginia Polytechnic Institute and State University
M. Chadha, Virginia Polytechnic Institute and State University
S. Chan, Virginia Polytechnic Institute and State University
D. F. Cowen, Virginia Polytechnic Institute and State University
G. Eigen, Virginia Polytechnic Institute and State University
J. S. Miller, Virginia Polytechnic Institute and State University
C. O'Grady, Virginia Polytechnic Institute and State University
J. Urheim, Virginia Polytechnic Institute and State University
A. J. Weinstein, Virginia Polytechnic Institute and State University
D. Acosta, Virginia Polytechnic Institute and State University
M. Athanas, Virginia Polytechnic Institute and State University
G. Masek, Virginia Polytechnic Institute and State University
H. P. Paar, Virginia Polytechnic Institute and State University
J. Gronberg, Virginia Polytechnic Institute and State University
R. Kutschke, Virginia Polytechnic Institute and State University
S. Menary, Virginia Polytechnic Institute and State University
R. J. Morrison, Virginia Polytechnic Institute and State University
S. Nakanishi, Virginia Polytechnic Institute and State University
H. N. Nelson, Virginia Polytechnic Institute and State University
T. K. Nelson, Virginia Polytechnic Institute and State University
C. Qiao, Virginia Polytechnic Institute and State University
J. D. Richman, Virginia Polytechnic Institute and State University
A. Ryd, Virginia Polytechnic Institute and State University
H. Tajima, Virginia Polytechnic Institute and State University
D. Sperka, Virginia Polytechnic Institute and State University
M. S. Witherell, Virginia Polytechnic Institute and State University
M. Procario, Virginia Polytechnic Institute and State University
R. Balest, Virginia Polytechnic Institute and State University
K. Cho, Virginia Polytechnic Institute and State University

Document Type

Article

Publication Date

1-1-1994

Abstract

The branching fractions for the five-charged-particle decays of the τ lepton have been measured in e+e- annihilations using the CLEO II detector at the Cornell Electron Storage Ring. Assuming all charged particles to be pions, the results are B(3π-2π+0 neutrals ντ)=(0.097±0. 005±0.011)%, B(3π-2π+ντ)=(0.077±0.005 ±0.009)%, B(3π-2π+π0ντ)=(0.019±0.004±0.004) %, and B(3π-2π+2π0ντ)<0.011% at the 90% C.L. B(3π-2π-π0ντ) is measured for the first time by exclusive π0 reconstruction. The results are compared with the predictions from the partially conserved-axial-current and conserved-vector-current hypotheses assuming isospin invariance. © 1994 The American Physical Society.

Recommended Citation

Gibaut, D.; Kinoshita, K.; Barish, B.; Chadha, M.; Chan, S.; Cowen, D. F.; Eigen, G.; Miller, J. S.; O'Grady, C.; Urheim, J.; Weinstein, A. J.; Acosta, D.; Athanas, M.; Masek, G.; Paar, H. P.; Gronberg, J.; Kutschke, R.; Menary, S.; Morrison, R. J.; Nakanishi, S.; Nelson, H. N.; Nelson, T. K.; Qiao, C.; Richman, J. D.; Ryd, A.; Tajima, H.; Sperka, D.; Witherell, M. S.; Procario, M.; Balest, R.; and Cho, K., "Study of the five-charged-pion decay of the τ lepton" (1994). Physics Faculty Publications. 44.
https://digitalcommons.bowdoin.edu/physics-faculty-publications/44