Calculation of α2 corrections to parapositronium decay
Abstract
We present details of our recent calculation of α2 corrections to the parapositronium decay into two photons. These corrections are rather small and our final result for the parapositronium lifetime agrees well with the most recent measurement. Implications for orthopositronium decays are briefly discussed.
- Publication:
-
Physical Review A
- Pub Date:
- May 2000
- DOI:
- 10.1103/PhysRevA.61.052502
- arXiv:
- arXiv:hep-ph/9910488
- Bibcode:
- 2000PhRvA..61e2502C
- Keywords:
-
- 36.10.Dr;
- 06.20.Jr;
- 12.20.Ds;
- 31.30.Jv;
- Positronium muonium muonic atoms and molecules;
- Determination of fundamental constants;
- Specific calculations;
- Relativistic and quantum electrodynamic effects in atoms and molecules;
- High Energy Physics - Phenomenology
- E-Print:
- 18 pages, latex