本题目来源于试卷: Elementary Particles，类别为 IB物理学
[问答题]
Which of the following reactions are posdv s)kmi* g:;ru)fil uf8w0m (+jgne -sible, and by what interaction could thefes-k :jf8g iv)mu0 l()w*gn+ rmd u;irt:.t/w:bsn cd(goc: 0;ekq k;k0 brkct:tec:. s:gw/( qndoy occur? For those forbidden, explain why.
(a) $p + \pi^- \to K^0 + p + \pi^0$
(b) $p + K^- \to \Lambda^0 + \pi^0$
(c) $n + K^+ \to \Sigma^+ + \pi^0 + \gamma$
(d) $K^- \to \pi^- + \pi^0 + \pi^+$
(e) $\pi^+ \to e^+ + \nu_e$
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