Determination of superfine splitting of positronium energy levels

M. Dineykhan, S. A. Zhaugasheva, Аidos Issadykov, N. Sagimbaeva

2013

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DOI 10.1134/s1547477113060095
Data confidence 70 medium
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Abstract

Energies of the singlet and triplet positronium states are analytically calculated considering the annihilation and loop corrections in a functional approach. The dependences of the constituent mass of constituent particles on the initial-state masses and the corresponding quantum number are derived. The wave function at the origin of coordinates is calculated and the decay widths of ortho- and parapositronium are determined. The result corresponds satisfactorily to available experimental data.