PoS - Proceedings of Science
Volume 416 - Loops and Legs in Quantum Field Theory (LL2022) - Parallel 3
Non-factorisable contributions to $t$-channel single-top production at the LHC and FCC
C. Brønnum-Hansen, J. Quarroz*, C. Signorile-Signorile and C.Y. Wang
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Published on: October 20, 2022
Single top quark is mainly produced through the $t$-channel W boson exchange $q + b \rightarrow q' + t$ at LHC. This process probes Wtb vertex directly and can be used to measure the CKM matrix element $V_{tb}$ or to constrain the bottom quark PDF. The non-factorisable contribution are the last missing piece of the NNLO corrections. In these proceedings, we discuss in a first part the ostensible importance of such corrections and the obtention of the different relevant amplitudes. In the second part, recently published results at the energy of the LHC are compared to new results for proton-proton collisions at $100\, {\rm TeV}$, the energy of the FCC.
DOI: https://doi.org/10.22323/1.416.0035
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