Possible test of the lepton number as the fourth color

We propose to test the hypothesis that the lepton number is a color in two-body lepton-hadron scattering, in particular neutrino-nucleon scattering. Detailed analysis shows that these tests can be done well at small momentum transfer (as small as possible) and high energies (say E/sub nu/ > or = 3 GeV and E/sub nu-bar/ > or = 5 GeV for q/sup 2/ < or = -0.1 GeV). Also, possible implications of this hypothesis for total cross sections are considered. Models and their implications for two-body reactions and vice versa are discussed. (AIP)