Srednicki — Quantum Field Theory · Problem 89.2

Canonical Quantization of Scalar Fields — Mark Srednicki

Physics — QFT · standard-model-quark-sector

Problem

Compute the rates for the decay processes

W^+ \to u\bar{d}

Z^0 \to u\bar{u}

, and

Z^0 \to \bar{d}d

. Neglect the quark masses. Express your results in GeV. Combine your answers with those of problem 88.6, and sum over generations to get the total decay rates for the

W^\pm

and

Z^0

. You can neglect the masses of all quarks and leptons except the top quark, and take

\theta_2 = \theta_3 = 0

Related theory

Physics Beyond The Standard Model

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