Double Logarithmic Terms $ln^2x$ in the Heavy Quark Production $\sigma(P\bar P \to h\bar h) - \sigma(PP \to h\bar h)$ Cross Sections

Abstract

Predictions for the difference of proton-antiproton and proton-proton cross sections in the heavy quark production within LO DGLAP analysis together with the $ln^2x$ terms resummation are presented. An important role of the double logarithmic $ln^2x$ corrections in a case of the large rapidity gap between a quark and an antiquark is discussed.