One more hard three-loop correction to parapositronium energy levels

One more hard three-loop correction to parapositronium energy levels A hard three-loop correction to parapositronium energy levels of order mα7 is calculated. This nonlogarithmic contribution is due to the insertions of one-loop photon propagator in the fermion lines in the diagrams with virtual two-photon annihilation. We obtained ΔE=0.03297(2)(mα7/π3) for this energy shift. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

One more hard three-loop correction to parapositronium energy levels

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One more hard three-loop correction to parapositronium energy levels

Abstract

A hard three-loop correction to parapositronium energy levels of order mα7 is calculated. This nonlogarithmic contribution is due to the insertions of one-loop photon propagator in the fermion lines in the diagrams with virtual two-photon annihilation. We obtained ΔE=0.03297(2)(mα7/π3) for this energy shift.
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Publisher
The American Physical Society
Copyright
Copyright © © 2017 American Physical Society
ISSN
1550-7998
eISSN
1550-2368
D.O.I.
10.1103/PhysRevD.96.011301
Publisher site
See Article on Publisher Site

Abstract

A hard three-loop correction to parapositronium energy levels of order mα7 is calculated. This nonlogarithmic contribution is due to the insertions of one-loop photon propagator in the fermion lines in the diagrams with virtual two-photon annihilation. We obtained ΔE=0.03297(2)(mα7/π3) for this energy shift.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Jul 1, 2017

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