| Article | |
| Report number | arXiv:1811.10398 ; CERN-TH-2018-256 ; CP3-18-66 ; SLAC-PUB-17357 |
| Title | All two-loop MHV remainder functions in multi-Regge kinematics |
| Author(s) | Del Duca, Vittorio (Zurich, ETH) ; Duhr, Claude (CERN ; Louvain U., CP3) ; Dulat, Falko (SLAC) ; Penante, Brenda (CERN) |
| Publication | 2019-01-21 |
| Imprint | 2018-11-26 |
| Number of pages | 36 |
| Note | 36 pages, 4 figures |
| In: | JHEP 1901 (2019) 162 |
| DOI | 10.1007/JHEP01(2019)162 |
| Subject category | hep-ph ; Particle Physics - Phenomenology ; hep-th ; Particle Physics - Theory |
| Abstract | We introduce a method to extract the symbol of the coefficient of $(2\pi i)^2$ of MHV remainder functions in planar $\mathcal{N}=4$ Super Yang-Mills in multi-Regge kinematics region directly from the symbol in full kinematics. At two loops this symbol can be uplifted to the full function in a unique way, without any beyond-the-symbol ambiguities. We can therefore determine all two-loop MHV amplitudes at function level in all kinematic regions with different energy signs in multi-Regge kinematics. We analyse our results and we observe that they are consistent with the hypothesis of a contribution from the exchange of a three-Reggeon composite state starting from two loops and eight points in certain kinematic regions. |
| Copyright/License | publication: (License: CC-BY-4.0) preprint: (License: arXiv nonexclusive-distrib 1.0) |
Corresponding record in: Inspire
Notice créée le 2018-11-29, modifiée le 2023-11-30
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