Contribution of light-by-light scattering to the orders [ital O]([ital m][alpha][sup 8]) and [ital O]([ital m][alpha][sup 8]ln [alpha]) orthopositronium decay rate

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.51.2908· OSTI ID:6401780

Adkins, G S ^[1]; Lymberopoulos, M ^[2]

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1. Franklin and Marshall College, Lancaster, Pennsylvania 17604 (United States)
2. Department of Physics and Astronomy, University of Oklahoma, Norman, Oklahoma 73019 (United States)

The gauge invariant contribution of the six radiatively corrected light-by-light scattering processes to the decay rate of orthopositronium into three photons is calculated. The infrared-safe Yennie gauge is used for the loop photons. The relative order of [alpha][sup 2] part of our result, 9.0074(9)([alpha][sup 2]/[pi][sup 2])[Gamma][sub LO], makes a 0.000350 [mu]s[sup [minus]1] contribution to the decay rate, thus reducing slightly the apparent discrepancy between the theoretical and experimental results. [Gamma][sub LO] is the lowest-order decay rate. The analytically obtained relative order [alpha][sup 2]ln [alpha] part of our result, [minus][alpha][sup 2]ln(1/[alpha])[Gamma][sub LO], is in agreement with earlier evaluations.

• DOE Contract Number: FG05-91ER40636
• OSTI ID: 6401780
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 50:4; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664500* -- Special Atoms & Molecules-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANALYTICAL SOLUTION
BASIC INTERACTIONS
DECAY
ELECTRODYNAMICS
ELECTROMAGNETIC INTERACTIONS
FIELD THEORIES
GAUGE INVARIANCE
INTERACTIONS
INVARIANCE PRINCIPLES
MULTI-PHOTON PROCESSES
PARTICLE INTERACTIONS
PHOTON-PHOTON INTERACTIONS
POSITRONIUM
QUANTUM ELECTRODYNAMICS
QUANTUM FIELD THEORY