Determine whether the following decay for the charged pion π−\pi^-π− is possible:
π−→μ−+νe \pi^- \to \mu^- + \nu_{\text{e}} π−→μ−+νeState the quark configurations of the positive kaon K+\text{K}^+K+ and the negative kaon K−\text{K}^-K−.
A student suggests that both the neutral pion π0\pi^0π0 and the neutron n\text{n}n are their own antiparticles because they both have a net charge of zero.
Discuss whether this suggestion is correct, referencing their quark configurations or other conserved quantum numbers.
