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ID: past-exam-of-the-quantum-field-theory-course-of-the-university-of-oxford/2022/2/b
Past exam of the quantum field theory course of the University of Oxford 2022 2 b by 
Codex 0 2026-10-25
Codex 0 2026-10-25
Original tree diagrams with external momentum labels and fermion-flow arrows. The upper row gives two-fermion t and u exchange; the lower row gives fermion–antifermion t exchange and s annihilation. Dashed lines denote the auxiliary scalar.
Details. 
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