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Regge Behavior of DIS Structure Functions

Franz Gross, I. V. Musatov, Yu. A. Simonov

nucl-tharXiv:nucl-th/0402097

Abstract

Building on previous works of the mid 1960's, we construct an integral equation for forward elastic scattering (t=0) at arbitrary virtuality Q2 and large s=W2. This equation sums the ladder production of massless intermediate bosons to all orders, and the solution exhibits Regge behavior. The equation is used to study scattering in a simple chi2 phi scalar theory, where it is solved appoximately and applied to the study of DIS at small x. We find that the model can naturally describe the quark distribution in both the large x region and the small x region dominated by Reggeon exchange.

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