Constraining New Physics with Single Top production at LHC

Abstract

We study effects of beyond the Standard Model physics coupling third generation quarks to leptons of the first two generations. We parametrize these effects by dimension-six effective operators, and we also consider related simplified UV completions: scalar leptoquark and $W^{\prime }$ models. We derive new constraints on these scenarios by using recent ATLAS measurements of differential cross sections of single top production in association with a $W$ boson, and also show how these limits will evolve with future data. We also describe how the limits can be significantly improved by using ratios of differential distributions with different flavors of leptons.

31 pages, 11 figures, 3 tables. New references added

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Cited by in corpus (6)

• New flavor physics in di- and tri-lepton events from single-top at the LHC and beyond
• LHC Constraints on Scalar Diquarks
• UV physics from IR features: new prospects from top flavor violation
• Probing composite Higgs boson substructure at the HL-LHC
• Searching for light new physics at the LHC via lepton-number violation
• Probing effective operators in single top quark production in association with a lepton-neutrino pair