Top-quark electroweak couplings at the FCC-ee

Abstract

An optimal-observable analysis of the lepton angular and energy distributions from top-quark pair production with semi-leptonic decays in e+e- collisions is used to predict the potential sensitivity of the FCC-ee to the couplings of the top quark to the photon and the Z.

Comments: 18 pages, 5 figures. To be published in JHEP (accepted for publication). Between version 2 and version 3, the suggestions of the JHEP referee were implemented both in the text (in Sections "Results and discussion" and "Summary and outlook") and in Figures 3 and 5