New limits on anomalous contributions to the $Wtb$ vertex

Abstract

The latest and most precise top quark measurements at the LHC and Tevatron are used to establish new limits on the $Wtb$ vertex. Recent results on the measurements of the $W$-boson helicity fractions and single top quark production cross section are combined in order to establish new limits at 95% CL (confidence level). The allowed regions for these limits are presented, for the first time, in three-dimensional graphics, for both real and imaginary components of the different anomalous couplings, providing a new perspective on the impact of the combination of different physics observables. These results are also combined with the prospected future measurement of the single top quark production cross section and $W$-boson helicity fractions at the LHC.

arXiv comment7 pages, 4 figures

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Cited by in corpus (19)

• Constraining the top-Higgs sector of the Standard Model Effective Field Theory
• The electro-weak couplings of the top and bottom quarks -- global fit and future prospects
• Global and optimal probes for the top-quark effective field theory at future lepton colliders
• EFTfitter---A tool for interpreting measurements in the context of effective field theories
• Probing $Zt\bar{t}$ couplings using $Z$ boson polarization in $ZZ$ production at hadron colliders
• Probing anomalous $Wtb$ couplings at the LHC in single top quark production through $t$-channel
• CP-violating top quark couplings at future linear $e^{+}{e}^{-}$ colliders
• Analysis of the $Wtb$ vertex from the measurement of triple-differential angular decay rates of single top quarks produced in the $t$-channel at $\sqrt{s}$ = 8 TeV with the ATLAS detector
• Effective field theory and scalar extensions of the top quark sector
• $tbW$ Anomalous Couplings in the Two Higgs Doublet Model
• Global Constraints on Top Quark Anomalous Couplings
• Transverse Momentum Resummation for $s$-channel single top quark production at the LHC
• Symbolic expressions for fully differential single top quark production cross section and decay width of polarized top quark in the presence of anomalous Wtb couplings
• Single top production at linear $e^{-}{e}^{+}$ colliders
• Top Quark Anomalous Couplings at the High-Luminosity Phase of the LHC
• Refined analysis and updated constraints on general non-standard tbW couplings
• Constraints on $Wtb$ anomalous coupling with $B\to X_s\gamma$ and $B_{s}\toμ^{+}μ^{-}
• The anomalous $Wtb$ vertex and top-pair production at the LHC
• W-boson helicity fractions in top decay as probes of dimension-6 and dimension-8 SMEFT operators