Eccentricity-period diagram of Ba giants (Jorissen et al. 2016, 2019; Van der Swaelmen et al. 2017) compared with the final (i.e. located in the red clump) orbital parameters of different sets of models analysed in Sect. 4. As before, different colours represent different values of B_wind and open symbols mark models with F_tide = 0.01. Stars marked with squares are clearly located along the RGB or early AGB and should therefore not be compared with our predictions valid for red-clump stars only.