Single-transverse-photon contributions of order [alpha][sup 6]ln ([alpha]) to the energy levels of positronium
- Physics Department, Brandeis University, Waltham, Massachusetts 02254 (United States)
Some of the calculational techniques used to compute the order [alpha][sup 6]ln([alpha][sup [minus]1]) contribution to the energies of the 1[ital s] and 2[ital s] states of positronium reported in an earlier paper [Fell, Phys. Rev. Lett. 68, 25 (1992)] are demonstrated. Recently, this same calculation was done by an independent group [Khriplovich, Milstein, and Yelkhovsky, Phys. Lett. B 283, 237 (1992)]. Although the initial results of the two calculations did not agree, this discrepancy has since been resolved in favor of the calculation presented here. We discuss the two calculations and then compare the theoretical and experimental values of the [ital n]=2 fine structure and the triplet 2[ital s]-1[ital s] splitting.
- OSTI ID:
- 6037563
- Journal Information:
- Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 48:4; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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