Patrick Janot edited Outlook.tex  about 9 years ago

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The present study is only a first look at this topic for the FCC-ee. It enhances the fantastic potential of a 100-km circular ${\rm e^+e^-}$ collider already envisioned in Ref.~\cite{Bicer_2014} with the full profiling of the top quark with a precise measurement of its electroweak couplings. It becomes now of particular interest to check the added value, if any, of these measurements to the sensitivity to new physics, when combined with the unequalled precision of the measurement of the Z, the W, and the Higgs boson properties, as well as of the top-quark mass, at the FCC-ee.   Although the present projections were obtained with somewhat conservative hypotheses on the detector performance, it will also be important to reproduce these results with a Monte Carlo study, as to check that the requirements on the detector are indeed quite modest. Although the precisions are already competitive with other projects on the market, this study will also have to be completed with, for example, the energy and angular distrbutions of the b-quark jets and their correlations with the lepton distributions, to improve the precision on $F_{1A}^Z$. Finally, the CP-violating form factors, ignored in this study for the sake of an easy comparison with Ref.~\cite{Baer_2013), Ref.~\cite{Baer_2013},  will have to be included too. Event variables, such as asymmetries between the negative and the positive lepton distributions~\cite{Grazdkowski_2000}, will be instrumental in this perspective.