# The Soft Anomalous Dimension at four loops in the Regge Limit

### Submission summary

 As Contributors: Niamh Maher Arxiv Link: https://arxiv.org/abs/2111.01517v1 (pdf) Date accepted: 2022-05-04 Date submitted: 2021-11-03 09:20 Submitted by: Maher, Niamh Submitted to: SciPost Physics Proceedings Proceedings issue: RADCOR 2021 (15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology) Academic field: Physics Specialties: High-Energy Physics - Theory High-Energy Physics - Phenomenology Approach: Theoretical

### 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.

Published as SciPost Phys. Proc. 7, 013 (2022)

### Submission & Refereeing History

Submission 2111.01517v1 on 3 November 2021

## Reports on this Submission

### Strengths

The article reports on the work presented at RADCOR/LoopFest 2021. It fulfills all the requirements for publication in SciPost Proceedings.

None.

### Report

The article reports on the work presented at RADCOR/LoopFest 2021. It fulfills all the requirements for publication in SciPost Proceedings and therefore we recommend its publication.

### Requested changes

None.

• validity: high
• significance: high
• originality: good
• clarity: high
• formatting: excellent
• grammar: excellent