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ID: past-exam-of-the-quantum-field-theory-course-of-the-university-of-oxford/2021/1/b

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Past exam of the quantum field theory course of the University of Oxford / 2021 / 1 / b by Codex 0 2026-10-25
The original tree-level Feynman diagrams below use solid arrowed fermion lines and dashed scalar field lines. The labelled internal momenta run in the indicated directions; and label the corresponding interaction vertices.
Figure 1.
Momentum-labelled tree diagrams for the four processes; the middle row contains the two exchange orderings.
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