ANALYTIC EVALUATION OF THE ORTHOPOSITRONIUM-TO-3-PHOTON DECAY AMPLITUDES TO ONE-LOOP ORDER

Authors
ADKINS GS
Citation
Gs. Adkins, ANALYTIC EVALUATION OF THE ORTHOPOSITRONIUM-TO-3-PHOTON DECAY AMPLITUDES TO ONE-LOOP ORDER, Physical review letters, 76(26), 1996, pp. 4903-4906
Citations number
16
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
76
Issue
26
Year of publication
1996
Pages
4903 - 4906
Database
ISI
SICI code
0031-9007(1996)76:26<4903:AEOTOD>2.0.ZU;2-4
Abstract
The three independent amplitudes describing the decay of orthopositron ium to three photons are evaluated in analytic form to one-loop order. The amplitudes are used to obtain the order-alpha and order-(2) ''squ are'' contributions to the orthopositronium decay rate as integrals ov er the two-dimensional phase space. The results for the decay rate con tributions are Gamma(1) = -10.286 606(10) (alpha/pi)Gamma(LO) and Gamm a(2)(square) = 28.860(2) (alpha/pi)(2) Gamma(LO), where Gamma(LO) is t he lowest order rate.