Physics · Nuclear and Particle Physics

Two projectile protons P1 and P2, both with spin up (along the +z direction), approach from opposite sides and are scattered from another fixed target proton T with spin up at rest. P1 moves along the +x direction toward the origin and scatters in the xy plane, while P2 moves along the -x direction toward the origin and scatters in the xy plane. The nuclear interaction potential between the projectiles and the target proton is λL·S, where L is the orbital angular momentum of the system with respect to the target, S is the total spin angular momentum of the system, and λ is a negative constant. Which one of the following statement describes their scattering behavior?