%0 Electronic Article
%A Bargheer, Till
%T Systematics of the Multi-Regge Three-Loop Symbol
%N DESY-16-115
%M PUBDB-2016-02553
%M DESY-16-115
%M arXiv:1606.07640
%D 2016
%X We review the systematics of Mandelstam cut contributions to planar scattering amplitudes in the multi-Regge limit. Isolating the relevant cut terms, we explain how the BFKL expansion can be used to construct the perturbative n-point MHV multi-Regge limit symbol from a finite number of basic building blocks. At three loops and at leading logarithmic order, two building blocks are required. These are extracted from the known three-loop six-point and seven-point symbols for general kinematics. The subleading and sub-subleading terms require two and one further building block, respectively. The latter could either be reconstructed from further perturbative data, or from BFKL integrals involving yet-unknown corrections to the central emission vertex, on whose construction we also briefly comment.
%K multi-Regge (autogen)
%K buildings (autogen)
%K BFKL equation (autogen)
%K scattering amplitude (autogen)
%K kinematics (autogen)
%F PUB:(DE-HGF)25 ; PUB:(DE-HGF)29
%9 PreprintReport
%R 10.3204/PUBDB-2016-02553
%U https://bib-pubdb1.desy.de/record/300996