Soft gluon resummation for associated squark-electroweakino production at the LHC
arXiv:2202.13416 · doi:10.1007/JHEP06(2022)130
Abstract
We perform a threshold resummation calculation for the associated production of squarks and electroweakinos at the LHC to the next-to-leading logarithmic (NLL) accuracy. Analytical results for the process-dependent soft anomalous dimension and the hard matching coefficient are presented. The resummed results are matched to fixed-order predictions at next-to-leading order (NLO) in QCD, which are generalised to scenarios with non-universal squark masses and mixings. Numerically, the NLL contributions increase the total NLO cross section by to for squark masses ranging from 1 TeV to 3 TeV, respectively, and they reduce the dependence of the predictions on the factorisation and renormalisation scales from typically to below . Our NLO and NLO+NLL calculations have been implemented in the publicly available program Resummino.
arXiv comment27 pages, 8 figures, 3 tables, JHEP version
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