Griffiths Introduction to Elementary Particles · Problem 8.15
Quantum Chromodynamics — David J. Griffiths
Physics — QFT · electron-neutron-scattering
Problem
Electron-neutron scattering experiments are harder to do than electron-proton experiments, because you cannot make a target of free neutrons. Nevertheless, the essential data can be inferred from electron-deuteron scattering, and it is found that
∫01F2neutrondx=0.12
Use this, together with the proton result
∫01F2protondx=0.18
to confirm equation (8.57). [Hint: How do you suppose un(x) and dn(x) are related to the corresponding functions for the proton?]