Wilson-loop formalism for Reggeon exchange at high energy

Abstract

I will discuss how the non-vacuum, quark-antiquark Reggeon-exchange contribution to meson-meson elastic scattering, at high energy and low tranferred momentum, can be related to the path-integral of a certain Wilson-loop expectation value over the trajectories of the exchanged fermions. Making use of this representation, I will show how a linear Regge trajectory is obtained through gauge/gravity duality and the use of minimal surfaces.

Comments: Contribution to the proceedings of QCD12 - 16th International Conference in Quantum ChromoDynamics, 2-6th July 2012 (Montpellier - France); 4 pages, 2 figures