Parity Violating Compton Amplitude in Unified Theories
Jan, 197535 pages
Published in:
- Annals Phys. 94 (1975) 349
Report number:
- MPI-PAE-PTH-1-75
Citations per year
Abstract: (Elsevier)
The leading contribution of O ( αG F ) to the parity violating piece of the electron Compton amplitude is calculated in the Weinberg Salam unified theory and is shown to vanish. The reason for this is the nonexistence of parity violating charge and electric dipole moment. In the computation, a problem with the usual gauge fixing terms in the Weinberg model was encountered and resolved; the gauge fixing terms made it impossible to satisfy the electromagnetic Ward identity off mass-shell. The resolution of this problem has led to changed Feynman rules resulting in fewer graphs and gauge dependent vertices. Further features are a renormalization of the parity violating infinities, and a discussion of how the γ 5 -algebra and n -dimensional regularization can coexist peacefully.- FIELD THEORY: UNIFIED INTERACTION
- ELECTRON: COMPTON SCATTERING
- COMPTON SCATTERING: ELECTRON
- MODEL: WEINBERG
- PARITY: VIOLATION
- CHARGE
- ELECTRIC MOMENT
- QUANTUM ELECTRODYNAMICS: WARD-TAKAHASHI IDENTITY
- MODEL: OFF-SHELL
- FEYNMAN GRAPH
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