The Soft Anomalous Dimension at four loops in the Regge Limit
Niamh Maher, Giulio Falcioni, Einan Gardi, Calum Milloy, Leonardo Vernazza
SciPost Phys. Proc. 7, 013 (2022) · published 20 June 2022
- doi: 10.21468/SciPostPhysProc.7.013
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Abstract
The soft anomalous dimension governs the infrared divergences of scattering amplitudes in general kinematics to all orders in perturbation theory. By comparing the recent Regge-limit results for $2\to2$ scattering (through Next-to-Next-to-Leading Logarithms) in full colour to a general form for the soft anomalous dimension at four loops we derive powerful constraints on its kinematic dependence, opening the way for a bootstrap-based determination.
Authors / Affiliations: mappings to Contributors and Organizations
See all Organizations.- 1 Niamh Maher,
- 1 Giulio Falcioni,
- 1 Einan Gardi,
- 2 Calum Milloy,
- 2 3 Leonardo Vernazza
- 1 University of Edinburgh
- 2 Università degli Studi di Torino / University of Turin [UNITO]
- 3 Organisation européenne pour la recherche nucléaire / European Organization for Nuclear Research [CERN]
Funders for the research work leading to this publication
- European Research Council [ERC]
- Horizon 2020 (through Organization: European Commission [EC])
- Ministero dell’Istruzione, dell’Università e della Ricerca (MIUR) (through Organization: Ministero dell'Istruzione, dell'Università e della Ricerca / Ministry of Education, Universities and Research [MIUR])
- Science and Technology Facilities Council [STFC]