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

Research outputpeer-review

Abstract

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.

Original languageEnglish
Article number093401
JournalPhysical Review Letters
Volume123
Issue number9
DOIs
Publication statusPublished - 26 Aug 2019

Fingerprint

positrons
photons
electrons
impulses
silver
formalism
approximation
atoms

Scopus subject areas

  • Physics and Astronomy(all)

Cite this

@article{35f0c6ce5d5b4a548fa81d1a76c1dbf7,
title = "Ab initio QED Treatment of the Two-Photon Annihilation of Positrons with Bound Electrons",
abstract = "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.",
author = "Zaytsev, {V. A.} and Volotka, {A. V.} and D. Yu and S. Fritzsche and X. Ma and H. Hu and Shabaev, {V. M.}",
year = "2019",
month = "8",
day = "26",
doi = "10.1103/PhysRevLett.123.093401",
language = "English",
volume = "123",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "9",

}

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.

In: Physical Review Letters, Vol. 123, No. 9, 093401, 26.08.2019.

Research outputpeer-review

TY - JOUR

T1 - Ab initio QED Treatment of the Two-Photon Annihilation of Positrons with Bound Electrons

AU - Zaytsev, V. A.

AU - Volotka, A. V.

AU - Yu, D.

AU - Fritzsche, S.

AU - Ma, X.

AU - Hu, H.

AU - Shabaev, V. M.

PY - 2019/8/26

Y1 - 2019/8/26

N2 - 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.

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.

UR - http://www.scopus.com/inward/record.url?scp=85072017452&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.123.093401

DO - 10.1103/PhysRevLett.123.093401

M3 - Article

VL - 123

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 9

M1 - 093401

ER -