Three photon virtual annihilation contributions to positronium hyperfine structure

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Hyperfine splitting in positronium to O(αme): one-photon annihilation contribution

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ژورنال

عنوان ژورنال: Physics Letters B

سال: 1977

ISSN: 0370-2693

DOI: 10.1016/0370-2693(77)90474-9