Unified description of inclusive and exclusive reactions at all momentum transfers

The constituent-interchange model is used to relate large- and small-momentum-transfer reactions, to relate inclusive and exclusive processes, and to predict the form of the inclusive cross section throughout the Peyrou plot. Two important corrections to the triple-Regge formula are derived. The first, important at a small missing mass, allows a smooth connection to exclusive processes. The second, important at large missing mass, allows a smooth connection to the central region and to the large-transverse-momentum regime. Simple quark-counting rules are given which predict the limiting behavior of Regge trajectories and residue functions, and also the powers of ${P_T}^2$ and the missing-mass dependence of inclusive cross sections. Many experimental consequences of the model are given.