Abstract

“CHN≓ (1966)was an algebraic algorithm which reproduced and extended the predictions of the “non-interacting≓ quark model in the asymptotic high-energy region. It wus formulated within the conceptual framework of on- mass- shell physics and of the complex angular-momentum plane. Prior to the advent of the standard model, it was reinterpreted in terms of the Melosh transformation relating “current≓ to “constituent≓ quarks. It is now lied up to the QCD paradigm