Is there a new pseudoscalar particle
Technical Report
·
OSTI ID:6147135
The decay rate of orthopositronium has recently been measured in a new high precision experiment. The result is 10 standard deviations above the theoretical value. It is shown that a light neutral pseudoscalar R may resolve this discrepancy and still be consistent with the anomalous magnetic moments of the electron and the muon. If the mass m/sub R/ less than or equal to 5 keV, then the existence of this proposed particle R is consistent with the beam-dump experiments. The lifetime of R is large, tau greater than or equal to .2s.
- Research Organization:
- Oklahoma State Univ., Stillwater (USA). Dept. of Physics
- DOE Contract Number:
- FG05-85ER40215
- OSTI ID:
- 6147135
- Report Number(s):
- DOE/ER/40215-T7; ON: DE87013194
- Country of Publication:
- United States
- Language:
- English
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