Question

What is the maximum energy of the anti-neutrino?

• A. Zero
• B. Much less than $0.8\times {10}^{6}eV$
• C. Nearly $0.8\times {10}^{6}eV$
• D. Much larger than $0.8\times {10}^{6}eV$

Answer 1

The correct option is B Much less than $0.8\times {10}^{6}eV$

Mass difference between neutron and proton is $0.001amu$.

Mass-Energy conversion: $\frac{1.66\times {10}^{-30}\times 9\times {10}^{16}}{1.602\times {10}^{-19}}=0.932\times {10}^{6}eV$

As electron takes $0.8\times {10}^{6}eV$, anti-neutrino will be remained with much less than the energy of electron.