本题目来源于试卷: Physics Unit32: Elementary Particles，类别为 Generic Physics
[单选题]
Is the following decay pwe-(4ali iz2allowed8d 3azqi 1+aj-ikgl u7? $\pi^{\circ} \rightarrow \mu^+ \;+\; \nu_{\mu}$
A. yes
B. No, because charge is not conserved.
C. No, because mass is created.
D. No, because lepton number is not conserved.
参考答案: B
本题详细解析:
暂无
| 
Post time 2024-1-22 02:15:01