Anomalous Production of High-Energy Muons in e+e- Collisions at 4.8 GeV
Abstract
In view of the possible production of heavy leptons or charmed states in e+e- collisions, we searched for anomalous muons with momenta pμ>~1 GeV/c. The inclusive cross section for nch>=3 has an upper limit of 96 pb (assuming isotropy). For nch=2 and noncoplanarity > 20°, an excess of muonic events is observed, corresponding to (dσdΩ)|90°=23+12-9 pb/sr; the probability that known processes produce the observed events is 2×10-4.
- Publication:
-
Physical Review Letters
- Pub Date:
- March 1976
- DOI:
- 10.1103/PhysRevLett.36.558
- Bibcode:
- 1976PhRvL..36..558C