Analytic evaluation of the orthopositronium-to-three-photon decay amplitudes to one-loop order

Journal Article · Sat Jun 01 04:00:00 EDT 1996 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.76.4903· OSTI ID:286020

Adkins, G S ^[1]

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1. Franklin and Marshall College, Lancaster, Pennsylvania 17604 (United States)

The three independent amplitudes describing the decay of orthopositronium to three photons are evaluated in analytic form to one-loop order. The amplitudes are used to obtain the order-{alpha} and order-{alpha}{sup 2} {open_quote}{open_quote}square{close_quote}{close_quote} contributions to the orthopositronium decay rate as integrals over the two-dimensional phase space. The results for the decay rate contributions are {Gamma}{sub 1}={minus}10.286606(10)({alpha}/{pi}){Gamma}{sub LO} and {Gamma}{sub 2}(square)=28.860(2)({alpha}/{pi}){sup 2}{Gamma}{sub LO}, where {Gamma}{sub LO} is the lowest order rate. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 286020
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 26 Vol. 76; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BOUND STATE
BOUND STATES
DECAY AMPLITUDES
GAMMA DECAY
MULTI-PHOTON PROCESSES
PHASE SPACE
POSITRONIUM
QUANTUM ELECTRODYNAMICS