S-matrix approach to the theory of hadron structure functions

We argue that the factorized long-distance part of the hadron cross section can be constrained by S-matrix techniques. Specifically, assuming (i) that the low-p/sub T/ multiplicity, being a by-product of a multijet production mechanism generated by iteration of the standard hard-scattering cross section in the QCD framework, increases indefinitely with energy, and (ii) that the hard hadron cross section is a logarithmic power of the energy asymptotically, we get a unique prediction for the hadron structure function