In August I wrote: What is really interesting to me about the suggested +muon/electron system, > or a muon/positron system, is that the masses are not equal. My intuition > tells me that the matter/anti-matter combination should result in > annihilation, but I'm really curious what the decay products would be. >
Here is an answer on Quora that says that a muon and a positron cannot annihilate via the electromagnetic interaction in the same way that an electron and positron do: http://www.quora.com/Can-a-muon-annihilate-with-a-positron (They can, however, interact via a less interesting two-stage process by way of the weak interaction.) Eric

