I was wondering if anyone could help me out with this past paper question we were given today in class:
We were given a graph of number of beta-minus particles against the kinetic energies. This graph starts at zero, has a high peak and then goes back down at the end of the graph (i hope this is clear enough).
The question says, this graph shows the distribution of the kinetic energies of beta-minus particles from the decay of Carbon-14. Explain how this graph supports the existence of the antineutrino.
If anyone could help out, it would be much appreciated!