In: Physics
1. The proton-neutron differential scattering cross section is symmetric about 90 degrees axis in center of mass frame of reference. Why is this important?
2. What is the experimental evidence for partons?
3. What is the relation between strong interaction responsible for binding of nucleons and one that binds quarks. Briefly state most important similarities and differences.
4. Explain why scientists do not expect to observe free quarks.
5. In what ways are electromagnetic and color charges similar and different?