MODEL INDEPENDENT CONSTRAINTS ON HADRON FORM FACTORS AT LARGE Q2 IN LIGHT-FRONT QCD

Among the three forms of relativistic Hamiltonian dynamics proposed by Dirac in 1949, the front form has the largest number of kinematic generators. This distinction provides useful consequences in the analysis of physical observables in hadron physics. We discuss a rationale for using the front form dynamics, known nowadays as the light-front dynamics (LFD), and present a few explicit examples of hadron phenomenology that the front form uniquely can offer from the first principle QCD. In particular, model independent constraints are provided for the analyses of deuteron form factors and the NΔ transition form factors at large momentum transfer square Q2.