| Autor: |
Vittorio Del Duca, Claude Duhr, Falko Dulat, Brenda Penante |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
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| Zdroj: |
Journal of High Energy Physics, Vol 2019, Iss 1, Pp 1-30 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1029-8479 |
| DOI: |
10.1007/JHEP01(2019)162 |
| Popis: |
Abstract We introduce a method to extract the symbol of the coefficient of (2πi)2 of MHV remainder functions in planar N $$ \mathcal{N} $$ = 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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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