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Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders

by L. Vernazza, G. Falcioni, E. Gardi, N. Maher, C. Milloy

Submission summary

As Contributors: Leonardo Vernazza
Preprint link: scipost_202111_00032v1
Date submitted: 2021-11-18 09:57
Submitted by: Vernazza, Leonardo
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
Approaches: Theoretical, Phenomenological

Abstract

We review recent progress on the calculation of scattering amplitudes in the high-energy limit. We start by illustrating the shockwave formalism, which allows one to calculate amplitudes as iterated solutions of rapidity evolution equations. We then focus on our recent results regarding 2 -> 2 parton scattering. We present the calculation of the imaginary part of the amplitude, at next-to-leading logarithmic accuracy in the high-energy logarithms, formally to all orders, and in practice to 13 loops. We then discuss the computation of the real part of the amplitude at next-to-next-to-leading logarithmic accuracy and through four loops. Both computations are carried in full colour, and provide new insight into the analytic structure of scattering amplitudes and their infrared singularity structure.

Current status:
Editor-in-charge assigned


Submission & Refereeing History

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Submission scipost_202111_00032v1 on 18 November 2021

Reports on this Submission

Anonymous Report 1 on 2021-11-27 (Invited Report)

Strengths

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

Weaknesses

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

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