The Decay $\pi ^ { - } \rightarrow \mu ^ { - } + \bar { v } _ { \mu } + \bar { \nu } _ { e }$

question 11

Multiple Choice

The decay $\pi ^ { - } \rightarrow \mu ^ { - } + \bar { v } _ { \mu } + \bar { \nu } _ { e }$ is not possible because

• A)L_e is not conserved.
• B)L _\(\mu\) is not conserved.
• C)quark number is not conserved.
• D)all of the above are not conserved.
• E)only L_e and L _\(\mu\) are not conserved.

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