Griffiths Introduction to Elementary Particles · Problem 10.13

Weak Interactions — David J. Griffiths

Physics — QFT · semileptonic-decay-rates

Problem

Using the formula Γ=130π3ℏ(gw2MWc2)4(Δm c2)5X2\Gamma = \frac{1}{30\pi^3 \hbar}\left(\frac{g_w}{2M_W c^2}\right)^4 (\Delta m\, c^2)^5 X^2 where Δm\Delta m is the baryon mass decrease and XX is the Cabibbo factor, work out the numbers for the semileptonic decays of the hyperons (e.g., Σ0→Σ++e+νˉe\Sigma^0 \to \Sigma^+ + e + \bar{\nu}_e).

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