Calculation of {alpha}{sup 2} corrections to parapositronium decay

Journal Article · Mon May 01 04:00:00 EDT 2000 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.61.052502· OSTI ID:20216402

Czarnecki, Andrzej ^[1]; Melnikov, Kirill ^[2]; Yelkhovsky, Alexander ^[3]

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1. Physics Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Theoretical Physics Group, SLAC, Mail Stop 81, P.O. Box 4349, Stanford, California 94309 (United States)
3. Budker Institute for Nuclear Physics, and Physics Department, Novosibirsk University, Novosibirsk 630090, Russia (Russian Federation)

We present details of our recent calculation of {alpha}{sup 2} 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. (c) 2000 The American Physical Society.

• OSTI ID: 20216402
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 61; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BOUND STATE
POSITRONIUM
QUANTUM ELECTRODYNAMICS
RELATIVITY THEORY
THEORETICAL DATA