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hep-ph2015★ 1 cited
Positronium energy levels at order : vacuum polarization corrections in the two-photon-annihilation channel
Gregory S. Adkins, Christian Parsons, M. D. Salinger +1
We have calculated all contributions to the energy levels of parapositronium at order coming from vacuum polarization corrections to processes involving virtual annihilatio…
hep-ph2014★ 24 cited
Positronium energy levels at order : light-by-light scattering in the two-photon-annihilation channel
Gregory S. Adkins, Christian Parsons, M. D. Salinger +2
Recent and ongoing experimental work on the positronium spectrum motivates new efforts to calculate positronium energy levels at the level of three loop corrections. We have obtain…