Abstract
It is shown that the fourth-order vacuum polarization correction to the annihilation diagram contributes =-144Rln-1 to the positronium ground-state hyperfine structure. This leads to a reduction of 11.3 MHz in the previous theoretical prediction which greatly improves the agreement between theory and experiment.
| Original language | English |
|---|---|
| Pages (from-to) | 887-888 |
| Number of pages | 2 |
| Journal | Physical Review Letters |
| Volume | 30 |
| Issue number | 19 |
| DOIs | |
| State | Published - 1 Jan 1973 |
| Externally published | Yes |
ASJC Scopus subject areas
- General Physics and Astronomy