- Burchat, PR
- Schmidke, WB
- Yelton, JM
- Abrams, G
- Amidei, D
- Baden, AR
- Barklow, T
- Boyarski, AM
- Boyer, J
- Breidenbach, M
- Burke, DL
- Butler, F
- Dorfan, JM
- Feldman, GJ
- Gidal, G
- Gladney, L
- Gold, MS
- Goldhaber, G
- Golding, L
- Haggerty, J
- Hanson, G
- Hayes, K
- Herrup, D
- Hollebeek, RJ
- Innes, WR
- Jaros, JA
- Juricic, I
- Kadyk, JA
- Karlen, D
- Lankford, AJ
- Larsen, RR
- LeClaire, BW
- Levi, M
- Lockyer, NS
- Lüth, V
- Matteuzzi, C
- Nelson, ME
- Ong, RA
- Perl, ML
- Richter, B
- Riles, K
- Ross, MC
- Rowson, PC
- Schaad, T
- Schellman, H
- Sheldon, PD
- Trilling, GH
- de la Vaissiere C
- Wood, DR
- Zaiser, AC
- et al.
The branching fraction for -5(0) is measured from data accumulated with the Mark II detector at PEP. Four events are observed with an estimated hadronic background of (0.03-0.02+0.04) events and a background from -30 of (0.05-0.04+0.07) events. This results in a measured branching fraction of (0.160.080.04)%. The candidate events are used to establish an upper limit of 125 MeV/c2 on the mass at the 95% confidence level. © 1985 The American Physical Society.