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arXiv · 2204.05770

Non-factorisable contribution to $t$-channel single-top production

Christian Brønnum-Hansen·Kirill Melnikov·Jérémie Quarroz·Chiara Signorile-Signorile·Chen-Yu Wang
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Abstract

We compute the non-factorisable ${\cal O}(\alpha_s^2)$ corrections to $t$-channel single-top quark production at the LHC. These peculiar corrections arise because of interactions between the heavy- and the light-quark lines and appear for the very first time at next-to-next-to-leading order in perturbative QCD. We find that the non-factorisable corrections change the single-top production cross section and the relevant kinematic distributions in this process by about half a percent.

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Christian Brønnum-Hansen, Kirill Melnikov, Jérémie Quarroz, Chiara Signorile-Signorile, Chen-Yu Wang. 2022-04-12. Non-factorisable contribution to $t$-channel single-top production. https://doi.org/10.1007/jhep06(2022)061

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