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@ARTICLE{Bargheer:300996,
      author       = {Bargheer, Till},
      title        = {{S}ystematics of the {M}ulti-{R}egge {T}hree-{L}oop
                      {S}ymbol},
      reportid     = {PUBDB-2016-02553, DESY-16-115. arXiv:1606.07640},
      year         = {2016},
      abstract     = {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.},
      keywords     = {multi-Regge (autogen) / buildings (autogen) / BFKL equation
                      (autogen) / scattering amplitude (autogen) / kinematics
                      (autogen)},
      cin          = {T},
      cid          = {I:(DE-H253)T-20120731},
      pnm          = {611 - Fundamental Particles and Forces (POF3-611) /
                      INTGAUGESTRING - Integrable Structures in Supersymmetric
                      Gauge Theory and its String Dual (299865)},
      pid          = {G:(DE-HGF)POF3-611 / G:(EU-Grant)299865},
      experiment   = {EXP:(DE-MLZ)NOSPEC-20140101},
      typ          = {PUB:(DE-HGF)25 / PUB:(DE-HGF)29},
      eprint       = {1606.07640},
      howpublished = {arXiv:1606.07640},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:1606.07640;\%\%$},
      doi          = {10.3204/PUBDB-2016-02553},
      url          = {https://bib-pubdb1.desy.de/record/300996},
}