Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders
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 pa...
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| Format: | Article |
| Language: | English |
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SciPost
2022-06-01
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| Series: | SciPost Physics Proceedings |
| Online Access: | https://scipost.org/SciPostPhysProc.7.007 |
| _version_ | 1828725213718642688 |
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| author | G. Falcioni, E. Gardi, N. Maher, C. Milloy, L. Vernazza |
| author_facet | G. Falcioni, E. Gardi, N. Maher, C. Milloy, L. Vernazza |
| author_sort | G. Falcioni, E. Gardi, N. Maher, C. Milloy, L. Vernazza |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-04-12T13:22:09Z |
| format | Article |
| id | doaj.art-bf0d0bbbf7774638b34675fdd2f5fa8d |
| institution | Directory Open Access Journal |
| issn | 2666-4003 |
| language | English |
| last_indexed | 2024-04-12T13:22:09Z |
| publishDate | 2022-06-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics Proceedings |
| spelling | doaj.art-bf0d0bbbf7774638b34675fdd2f5fa8d2022-12-22T03:31:26ZengSciPostSciPost Physics Proceedings2666-40032022-06-01700710.21468/SciPostPhysProc.7.007Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon laddersG. Falcioni, E. Gardi, N. Maher, C. Milloy, L. VernazzaWe 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.https://scipost.org/SciPostPhysProc.7.007 |
| spellingShingle | G. Falcioni, E. Gardi, N. Maher, C. Milloy, L. Vernazza Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders SciPost Physics Proceedings |
| title | Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders |
| title_full | Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders |
| title_fullStr | Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders |
| title_full_unstemmed | Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders |
| title_short | Two-parton scattering in the high-energy limit: climbing two- and three-Reggeon ladders |
| title_sort | two parton scattering in the high energy limit climbing two and three reggeon ladders |
| url | https://scipost.org/SciPostPhysProc.7.007 |
| work_keys_str_mv | AT gfalcioniegardinmahercmilloylvernazza twopartonscatteringinthehighenergylimitclimbingtwoandthreereggeonladders |