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arXiv · 2502.17631

Resummation for $s$-channel single-top production

Nikolaos Kidonakis
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Abstract

I present higher-order results for $s$-channel single-top-quark production that are derived from soft-gluon resummation. I show that the soft-gluon corrections provide the dominant contribution to the QCD corrections, and that they approximate very well the exact results through NNLO. Furthermore, approximate N$^3$LO corrections are computed by using the expansion of the resummed cross section to third order in the strong coupling. The calculation treats the final-state $b$-quarks as massless but I also show how to extend the formalism to the case of massive $b$-quarks. The higher-order corrections are large at LHC energies and they improve the theoretical accuracy.

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Nikolaos Kidonakis. 2025-02-24. Resummation for $s$-channel single-top production. https://doi.org/10.1016/j.nuclphysb.2026.117352

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