Jacques

Thanks for the link ! It will be a lot of work for me to understand, but with the help of Wikipedia I think I will be able to grasp the essentials things. My goal is not to do any calculations, but to understand the basic principle (more than the usual analogy).

Thanks Severian So the standard model can compute the life time (or should I say the half-life time ?) of the neutron! I asked because the only thing I saw on the standard model is little table with the "fundamental particle" and some Feynman diagram . What would be a good start to go deeper than that ? What level of math is necesary ? I completly agree and I am at that step.

I was wondering if the Standard Model was able to predict the instability of the neutron ? Is it able to predict 15 minutes life of the neutron ? If yes what are the equations and parameters used to achive that ?