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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
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Submission summary
| Authors (as registered SciPost users): | Niamh Maher · Leonardo Vernazza |
| Submission information | |
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| Preprint Link: | scipost_202111_00032v1 (pdf) |
| Date accepted: | 2022-02-02 |
| Date submitted: | 2021-11-18 09:57 |
| Submitted by: | Vernazza, Leonardo |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR2021) |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| 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.
Published as SciPost Phys. Proc. 7, 007 (2022)
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.
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.