Ab initio QED Treatment of the Two-Photon Annihilation of Positrons with Bound Electrons

V. A. Zaytsev, A. V. Volotka, D. Yu, S. Fritzsche, X. Ma, H. Hu, V. M. Shabaev

Результат исследований: Научные публикации в периодических изданияхстатья

Выдержка

The process of a positron-bound-electron annihilation with simultaneous emission of two photons is investigated theoretically. A fully relativistic formalism based on an ab initio QED description of the process is worked out. The developed approach is applied to evaluate the annihilation of a positron with K-shell electrons of a silver atom, for which a strong contradiction between theory and experiment was previously stated. The results obtained here resolve this longstanding disagreement and, moreover, demonstrate a sizable difference with approaches so far used for calculations of the positron-bound-electron annihilation process, namely, Lee's and the impulse approximations.

Язык оригиналаанглийский
Номер статьи093401
ЖурналPhysical Review Letters
Том123
Номер выпуска9
DOI
СостояниеОпубликовано - 26 авг 2019

Отпечаток

positrons
photons
electrons
impulses
silver
formalism
approximation
atoms

Предметные области Scopus

  • Физика и астрономия (все)

Цитировать

Zaytsev, V. A. ; Volotka, A. V. ; Yu, D. ; Fritzsche, S. ; Ma, X. ; Hu, H. ; Shabaev, V. M. / Ab initio QED Treatment of the Two-Photon Annihilation of Positrons with Bound Electrons. В: Physical Review Letters. 2019 ; Том 123, № 9.
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Ab initio QED Treatment of the Two-Photon Annihilation of Positrons with Bound Electrons. / Zaytsev, V. A.; Volotka, A. V.; Yu, D.; Fritzsche, S.; Ma, X.; Hu, H.; Shabaev, V. M.

В: Physical Review Letters, Том 123, № 9, 093401, 26.08.2019.

Результат исследований: Научные публикации в периодических изданияхстатья

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AU - Zaytsev, V. A.

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AU - Fritzsche, S.

AU - Ma, X.

AU - Hu, H.

AU - Shabaev, V. M.

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AB - The process of a positron-bound-electron annihilation with simultaneous emission of two photons is investigated theoretically. A fully relativistic formalism based on an ab initio QED description of the process is worked out. The developed approach is applied to evaluate the annihilation of a positron with K-shell electrons of a silver atom, for which a strong contradiction between theory and experiment was previously stated. The results obtained here resolve this longstanding disagreement and, moreover, demonstrate a sizable difference with approaches so far used for calculations of the positron-bound-electron annihilation process, namely, Lee's and the impulse approximations.

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