Nonlocal QED and lepton g-2 anomalies

Quantum electrodynamics is generally extended to a nonlocal QED by introducing the correlation functions. The gauge link is introduced to guarantee that the nonlocal QED is locally U (1) gauge invariant. The corresponding Feynman rules as well as the proof of Ward–Takahashi identity are presented. A...

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Published inThe European physical journal. C, Particles and fields Vol. 84; no. 7; pp. 654 - 13
Main Authors Li, Hang, Wang, P.
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.07.2024
Springer Nature B.V
SpringerOpen
Subjects
Anomalies
Astronomy
Astrophysics and Cosmology
Correlation
Elementary Particles
Feynman diagrams
Hadrons
Heavy Ions
Leptons
Magnetic moments
Measurement Science and Instrumentation
Nuclear Energy
Nuclear Physics
Particle physics
Physics
Physics and Astronomy
Quantum electrodynamics
Quantum Field Theories
Quantum Field Theory
Regular Article - Theoretical Physics
String Theory
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Summary:Quantum electrodynamics is generally extended to a nonlocal QED by introducing the correlation functions. The gauge link is introduced to guarantee that the nonlocal QED is locally U (1) gauge invariant. The corresponding Feynman rules as well as the proof of Ward–Takahashi identity are presented. As an example, the anomalous magnetic moments of leptons are studied in nonlocal QED. At one-loop level, besides the ordinary diagrams, there are many additional Feynman diagrams which are generated from the gauge link. It shows the nonlocal QED can provide a reasonable explanation for lepton g - 2 anomalies.
ISSN:1434-6052
1434-6044
1434-6052
DOI:10.1140/epjc/s10052-024-13013-z