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.
| Original language | English |
|---|---|
| Article number | 011301 |
| Journal | Physical Review D |
| Volume | 96 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jul 1 2017 |
Bibliographical note
Publisher Copyright:© 2017 American Physical Society.
Funding
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.
| Funders | Funder number |
|---|---|
| U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China | PHY-1402593 |
| Russian Foundation for Basic Research | 16-02-00042 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)