One More Hard Three-Loop Correction to Parapositronium Energy Levels

Authors

Michael I. Eides, University of KentuckyFollow
Valery A. Shelyuto, D. I. Mendeleyev Institute for Metrology, Russia

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.

Document Type

Article

Publication Date

7-10-2017

Notes/Citation Information

Published in Physical Review D, v. 96, issue 1, 011301, p. 1-5.

© 2017 American Physical Society

The copyright holder has granted permission for posting the article here.

Digital Object Identifier (DOI)

https://doi.org/10.1103/PhysRevD.96.011301

Funding Information

This work was supported by the NSF Grant No. PHY-1402593. The work of V. S. was also supported in part by the Russian Foundation for Basic Research Grant No. 16-02-00042.

Repository Citation

Eides, Michael I. and Shelyuto, Valery A., "One More Hard Three-Loop Correction to Parapositronium Energy Levels" (2017). Physics and Astronomy Faculty Publications. 526.
https://uknowledge.uky.edu/physastron_facpub/526