Non-factorisable corrections to t-channel single-top production

by Christian Broennum-Hansen

Monday 13 Feb 2023, 11:30 → 12:30 Europe/Zurich

Aula Caldirola (Università degli Studi di Milano)

At the LHC, single top quarks are mainly produced through a t-channel W boson exchange, q+b→q′+t. QCD corrections to this process have been known for a while in the structure function approximation. However, at NNLO this approximation is no longer exact and so-called non-factorisable corrections also contribute. Although these corrections are colour-suppressed, there is reason to expect that they may provide a non-negligible impact. In this talk I will present the calculation of the non-factorisable contribution and discuss their phenomenological impact on single-top production at the LHC and FCC.