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Order alpha$^{2}$ corrections to the positronium hyperfine interval arising from three-photon virtual annihilation
| Autores principales: | , , , |
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| Lenguaje: | eng |
| Publicado: |
1977
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1007/BF02730349 http://cds.cern.ch/record/132736 |