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Question: 

The $\Lambda^0$ cannot decay by the following reactions. What conservation laws are violated in each of the reactions?

  1. $\Lambda^0 \nrightarrow$ n + $\pi^-$
  2. $\Lambda^0 \nrightarrow$ p + $\textrm{K}^-$
  3. $\Lambda^0 \nrightarrow \pi^+ + \pi^-$

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

Quick Answer: 
  1. charge and strangeness not conserved.
  2. strangeness and energy not conserved.
  3. strangeness, baryon number, and spin not conserved.

Giancoli 7th Edition, Chapter 32, Problem 20

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