Tonero, Alberto [UNESP]Fabbrichesi, MarcoPinamonti, Michele2018-12-112018-12-112015-01-01Nuclear and Particle Physics Proceedings, v. 267-269, p. 312-318.2405-6014http://hdl.handle.net/11449/173493We review and update current limits on possible anomalous couplings of the top quark to W gauge bosons. We consider data from top quark decay (as encoded in the W-boson helicity fractions) and single-top production (in the t-, s- and Wt-channels). We find improved limits with respect to previous results (in most cases of almost one order of magnitude) and extend the analysis to include four-quark operators. We find that new physics is constrained to live above an energy scale between 430 GeV and 3.2 TeV, depending on the form of its contribution.312-318engAnomalous couplingsBSM physicsLHCTop quarkTrabalho apresentado em evento10.1016/j.nuclphysbps.2015.10.124Acesso aberto2-s2.0-84988220964