Non-factorisable two-loop contribution to \(t\)-channel single-top production

We report on a recent computation of the non-factorisable contribution to the two-loop helicity amplitude for \(t\)-channel single-top production arXiv:2108.09222. This is the last missing piece of the two-loop virtual corrections to this process. We perform analytic integration-by-parts reduction t...

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Bibliographic Details
Published in:arXiv.org 2022-01
Main Authors: Brønnum-Hansen, Christian, Quarroz, Jérémie, Chen-Yu, Wang
Format: Article
Language:English
Subjects:
Helicity
Mass flow
Online Access:Get full text
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Summary:We report on a recent computation of the non-factorisable contribution to the two-loop helicity amplitude for \(t\)-channel single-top production arXiv:2108.09222. This is the last missing piece of the two-loop virtual corrections to this process. We perform analytic integration-by-parts reduction to master integrals and use the auxiliary mass flow method for their fast numerical evaluation. The impact of the non-factorisable corrections to single-top production on experimentally measured observables is estimated.
ISSN:2331-8422