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Two-loop amplitude generation in OpenLoops
by Stefano Pozzorini, Natalie Sch\"ar, Max F. Zoller
Submission summary
| Authors (as registered SciPost users): | Max Zoller |
| Submission information | |
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| Preprint Link: | scipost_202110_00049v1 (pdf) |
| Date accepted: | May 6, 2022 |
| Date submitted: | Oct. 30, 2021, 4:31 p.m. |
| Submitted by: | Max Zoller |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 15th International Symposium on Radiative Corrections: Applications of Quantum Field Theory to Phenomenology (RADCOR2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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Abstract
Numerical tools, such as OpenLoops, provide NLO scattering amplitudes for a very wide range of hard scattering amplitudes in a fully automated way. In order to match the numerical precision of current and future experiments, however, the higher precision of NNLO calculations is essential, and their automation in a similar tool highly desirable. In our approach, D-dimensional amplitudes are decomposed into loop-momentum tensor integrals with coefficients constructed in four dimensions and rational terms. We present a fully generic algorithm for the efficient numerical construction of the tensor coefficients, which constitutes an important building block for an automated NNLO tool.
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Editorial decision:
For Journal SciPost Physics Proceedings: Publish
(status: Editorial decision fixed and (if required) accepted by authors)
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