 2024

Source PDF: mmathphys.physics.ox.ac.uk/sites/g/files/vzsiac2991/files/mmathphys/documents/media/aqft_for_particle_physics_2024.pdf

Solutions to all seventeen lettered parts. Use natural units, the Minkowski metric $g_{\mu \nu }=\mathrm{diag}(1,-1,-1,-1)$, Feynman slash notation $/p={\gamma }^{\mu }{p}_{\mu }$, and the Feynman i-epsilon prescription in internal propagators. Define the scattering amplitude by $S_{fi}={\delta }_{fi}+i(2\pi {)}^4{\delta }^{(4)}(p_f-p_i){\mathcal{M}}_{fi}$. The gauge covariant derivative convention in question 3 is specified there to match the printed three-boson Feynman rule.