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

Abstract

We compute the non-factorisable $\mathcal{O}({\alpha }_s^2)$ 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.

29 pages, 5 figures

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Cited by in corpus (5)

• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Complete two-loop QCD amplitudes for $tW$ production at hadron colliders
• Integral of the double-emission eikonal function for a massive and a massless emitter at an arbitrary angle
• Evaluating master integrals in non-factorizable corrections to $t$-channel single-top production at NNLO QCD