Energy Dependence of σDD/σtot in DIS and Shadowing Corrections
E. Gotsman, E. Levin, M. Lublinsky, U. Maor, K. Tuchin
Abstract
We gereralize the Kochegov-McLerran formula for the ratio σDD/σtot in perturbative QCD, using Mueller-Glauber approach for shadowing corrections and AGK cutting rules. We investigate several phenomenological approaches with the goal of obtaining results consisent with experimental data. We fail to reproduce the observed weak energy dependence of the ratio, and conclude that the soft nonperturbative contribution present at short distances must also be included.
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