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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
|As Contributors:||Leonardo Vernazza|
|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)|
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.
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Anonymous Report 1 on 2021-11-27 (Invited Report)
The article reports on the work presented at RADCOR/LoopFest 2021. It fulfills all the requirements for publication in SciPost Proceedings.
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.