Abstract

We explore the possibility that the longitudinal hadron distributions in quark jets and in soft hadron collisions are similar. Plausibility arguments for this are given in the parton picture of Feynman. It leads to specific predictions for the behaviour of fragmentation functions in the z → 1 and z → 0 limits in terms of Regge trajectory intercepts. Quantum number effects and correlation lengths are discussed. Our results imply a monopole behaviour for the pion form factor, while that of the proton is consistent with a dipole.

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