Issues of Reggeization in $qq'$ Back-Angle Scattering

TL;DR

This paper re-derives the DLLA result for high-energy qq' backward scattering without integral equations, discusses the light-cone wave-function interpretation, and argues for the onset of reggeization in hadron-hadron scattering at high energies.

Contribution

It provides a new derivation of the DLLA result and discusses the conditions for reggeization in hadron-hadron scattering within the valence-quark model.

Findings

Re-derivation of DLLA result without integral equations

Inconsequential inequalities in the integrals identified

Reggeization expected at s_{hh} = 50 GeV^2 in hadron-hadron scattering

Abstract

The Kirschner-Lipatov result for the DLLA of high-energy $qq'$ backward scattering is re-derived without the use of integral equations. It is shown that part of the inequalities between the variables in the logarithmically-divergent integrals is inconsequential. The light-cone wave-function interpretation under the conditions of backward scattering is discussed. It is argued that for hadron-hadron scattering in the valence-quark model the reggeization should manifest itself at full strength starting from $s_{hh}=50 GeV^2$.