- Burchat, PR
- Feldman, GJ
- Barklow, T
- Boyarski, AM
- Burke, DL
- Dorfan, JM
- Gladney, L
- Hanson, G
- Hayes, K
- Hollebeek, RJ
- Innes, WR
- Jaros, JA
- Karlen, D
- Lankford, AJ
- Larsen, RR
- Leclaire, BW
- Lockyer, NS
- Lüth, V
- Matteuzzi, C
- Ong, RA
- Perl, ML
- Richter, B
- Riles, K
- Ross, MC
- Yelton, JM
- Zaiser, C
- Abrams, GS
- Amidei, D
- Baden, AR
- Boyer, J
- Butler, F
- Gidal, G
- Gold, MS
- Goldhaber, G
- Golding, L
- Haggerty, J
- Herrup, D
- Juricic, I
- Kadyk, JA
- Nelson, ME
- Rowson, PC
- Schellman, H
- Schmidke, WB
- Sheldon, PD
- Trilling, GH
- De La Vaissiere, C
- Wood, DR
- Levi, ME
- Schaad, T
- et al.

The branching fractions for the major decay modes of the lepton are measured from a sample of tagged decays selected from +- pairs produced in e+e- annihilation. The decay products of one member of the +- pair are used to identify the event. The opposite member of the pair is then included in the sample if it satisfies an invariant-mass cut and a charged-multiplicity cut. In this way, we attempt to select an unbiased sample of decays. The sample is divided into categories based on charged- and neutral-particle multiplicities, and charged-particle identification. The branching fractions are measured simultaneously, with an unfold technique and a maximum-likelihood fit, with the sum of the branching fractions constrained to be unity. The branching fractions for the decay modes - K- and - K*- are fixed at the world averages in the fit. The following branching fractions are measured: B(-e) =(19.10.81.1)%, B(-' - )=(18.30.90.8)%, B(-) =(10.01.1 *1,4)%, B(-0) =(25.81.72.5)%, B(-(n0, n>1))=(12.01.42.5)%, B(-+-) =(6.7 0.80.9)%, and B(-+- (n0,n>0)) =(6.10.80.9)%. The total branching fraction to one charged pion plus at least one neutral hadron is measured to be (37.81.21.0)%. Limits on allowed decay modes involving the meson are discussed. © 1987 The American Physical Society.