Don't judge me, I know it's a simple question for people who are good but:
How do you know what something decays into when you don't know anything except the first part. E.g. On June 2011 PHYA1, a question was:
Complete this equation for the decay of a K
- meson
K
- -------> ........ + ......... + .........
Also, how do you know what type of interaction something is undergoing and why. I think the above is weak but I'm not really sure
If it is can you please please tell me why, thanks