Published August 1999
| Version v1
Journal article
α2 Corrections to Parapositronium Decay
Creators
- 1. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
- 2. Institut fuer Theoretische Teilchenphysik, Universitaet Karlsruhe, D-76128 Karlsruhe (Germany)
- 3. Budker Institute for Nuclear Physics, Novosibirsk, 630090 (Russian Federation)
Description
Two-loop QED corrections to the decay rate of parapositronium (p-Ps) into two photons are presented. We find Γ(p-Ps→ γγ)=7989.50(2) μs-1 . The non-logarithmic O(α2) corrections turn out to be small, contrary to some earlier estimates. We speculate that the so-called 'orthopositronium lifetime puzzle' will not likely be solved by large QED corrections. copyright 1999 The American Physical Society
Additional details
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 83
- Journal Issue
- 6
- Journal Page Range
- p. 1135-1138
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 30051448
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BOUND STATE; LIFETIME; PERTURBATION THEORY; POSITRONIUM; QUANTUM ELECTRODYNAMICS
- Descriptors DEC
- ELECTRODYNAMICS; FIELD THEORIES; QUANTUM FIELD THEORY