Electromagnetic form factors of quarks and quark-hadron scattering

Electromagnetic form factors of hadrons are considered by both quark form factors and a quark-hadron scattering amplitude. The quark form factors satisfy the scaling law at large - q2, i.e., gsub(M)(q2)/gsub(E)(q2)=μ, and the effect of these form factors is studied in deep inelastic electron scattering. The quark-hadron scattering amplitude is approximated by the exchange of a quark or diquark, and their trajectories have intercepts of αsub(q)(0)--1/2 and αsub(d)(0)---1. Furthermore, νW2sup(eN)/νW2sup(eP)(x→1)→1/4 is explained by the quantum number dependence of diquark trajectories. (auth.)