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Question: 

Which of the following decays are possible? For those that are forbidden, explain which laws are violated.

  1. $\Xi^0 \rightarrow \Sigma^+$ + $\pi^-$
  2. $\Omega^- \rightarrow \Sigma^0$ + $\pi^-$ + $\nu$
  3. $\Sigma^0 \rightarrow \Lambda^0$ + $\gamma$ + $\gamma$

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.

Quick Answer: 
  1. not possible due to conservation of strangeness and energy.
  2. not possible due to conservation of strangeness, lepton number, and spin
  3. This decay is possible.

Giancoli 7th Edition, Chapter 32, Problem 32

(3:50)

Chapter 32, Problem 32 is solved.

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