Renormalization Group Constraints on New Top Interactions from Electroweak Precision Data

Abstract

Anomalous interactions involving the top quark contribute to some of the most difficult observables to directly access experimentally. They can give however a sizeable correction to very precisely measured observables at the loop level. Using a model-independent effective Lagrangian approach, we present the leading indirect constraints on dimension-six effective operators involving the top quark from electroweak precision data. They represent the most stringent constraints on these interactions, some of which may be directly testable in future colliders.

14 pages, 1 Table, 1 Figure. Minor changes, references added. Matches published version

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Cited by in corpus (9)

• Compilation of low-energy constraints on 4-fermion operators in the SMEFT
• Constraining top quark effective theory in the LHC Run II era
• MatchingTools: a Python library for symbolic effective field theory calculations
• Strong tW Scattering at the LHC
• Model independent constraints on four-lepton operators
• Renormalization group evolution of the universal theories EFT
• The Global Electroweak and Higgs Fits in the LHC era
• Electroweak precision constraints at present and future colliders
• Top quark physics in the Large Hadron Collider era