Z Polarization in $e^+e^-\to t\bar t Z$ for testing the top quark mass structure and the presence of final interactions Auteur(s): Renard F. M. (Document sans référence bibliographique) Ref HAL: hal-01768134_v1 Ref Arxiv: 1803.10466 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote Résumé: We show that the measurement of the $Z$ polarization in the $e^+e^-\to t\bar t Z$ process would allow an interesting determination of the role of the top quark mass. This can be used for testing the possibility of top compositeness or of the occurence of final state interactions related to the mass generation in particular the interaction with dark matter.