Answered: ) Draw two lowest-order Feynman… | bartleby

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) Draw two lowest-order Feynman diagrams of the process μμμμ, one
for the neutral current interaction and one for the charged current interaction.

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ANSWER to question iii
Rewrite S₁ S₂ in terms of S², |S₁|², 5₂|² by using the identity |S² = |S₁ + S₂|² = |S₁|² + |5₂|² +25₁ · 5₂. Use this to show that the combined spin angular momentum basis 5² for the electron and proton spins is an eigenstate basis for this dipole interaction.