posted on Apr, 26 2003 @ 05:07 AM
Yes, muffin: it's long been done. Of course, how "real" such things are is a matter of mathematics. Do a search on "fundamental particles" or
If it is new to you, it's an intriguing world of weird and wonderful names and theories, "charm" and "strangeness".
Do, however, pick a scientifially repectable source so you can see the limitations, at present, of the postulated particles and their properties.