Double-vertex contribution to the decay rate of orthopositronium
- 1 July 1975
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 12 (1), 338-339
- https://doi.org/10.1103/physreva.12.338
Abstract
The recently calculated decay rate of orthopositronium differs with the experimental value by 2½ standard deviations. This communication reports a 100-fold improvement in the numerical error estimate for the double-vertex diagram contribution to the decay rate. This improvement reduces the numerical error estimate of the previously calculated decay rate of orthopositronium by 20%. This improvement of the double-vertex diagrams alone does not bring the experimental and calculated values into good agreement; however, the discrepancy is reduced.Keywords
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